Tag Archives: camellia hedges

New directions with camellias

This is a longer piece than I usually post on this site but it was written for and first published by the Royal Horticultural Society (UK) annual journal of the Rhododendron, Camellia and Magnolia Group, 2022.

C. sasanqua ‘Crimson King’ showing the typical open, graceful form many sasanquas have as they mature

I married into a camellia family. Both Les Jury and Felix Jury were recognised in their day as making significant contributions to the camellia world with their new cultivars. Both worked with Camellia japonica and hybrids to create plants that were self-grooming (dropping spent flowers rather than having them hang onto the bush) and breeding out the tendency for stamens to turn black as blooms aged. Hugely popular in New Zealand, camellias ranked second only to roses in sales figures.

My own mother was not as keen. True, she described a young plant of Felix’s C. x williamsii ‘Rose Bouquet’ as being like growing an herbaceous paeony in a climate which did not favour the growing of any paeonies at all, but it was clear she saw it as second best. Memorably, she once declared that the trouble with camellias was that they were all red, white or pink blobs with shiny green foliage. With more experience, I now realise she was only thinking of C. japonica and hybrid camellias. I do not think she ever met the species or had anything to do with C. sasanqua.

We have a large garden with many camellias used in a variety of situations. I have never counted them but it will be in the hundreds, not the tens. When Mark started plant breeding, he followed in the footsteps of his father and his uncle and chose camellias first. They are right at home in our climate so we have camellias as feature plants, background plants, hedges both informal and clipped, windbreaks and as a backbone plant repeated throughout the garden.

The unsightly appearance of petal blight on japonicas, reticulatas and many hybrids. It looks marginally better on red blooms but a great deal worse on pale and white blooms.

The arrival of camellia petal blight – Ciborinia camelliae – was nothing short of devastating. Our massed displays of C. reticulata, C. japonica and hybrids blooming in winter and spring disappeared as petal blight took hold and now they are just a memory. Petal blight is common throughout the world. Is it only Australia that remains free from it now? It took a trip to the International Camellia Convention in southern China in 2016 for us to realise that our particular climatic conditions mean that the impact of blight here is arguably at the very worst end of the scale. We are humid and mild with regular rainfall and plenty of wind to spread the spores far and wide – ideal conditions for any fungal ailment. In the drier conditions of China, it was nowhere near as big a problem as here and talking to growers from around the world, they don’t suffer the same level of impact as we do.

In our particular location, it is bad enough for me to say that we haven’t and wouldn’t plant a C. japonica, a large flowered hybrid or a C. reticulata now. There is no point. Flowering has become sparse and all that early breeding for plants which are self-grooming does not work for these vulnerable camellias so the display is now pale brown blighted blooms or blooms in the process of being blighted with just a few lovely flowers to remind us of times past.

Camellia minutiflora

All is not lost, but we have done a serious re-think. Fortunately, Mark had always been interested in miniature flowered camellias with a strong personal preference for the simplicity of singles and semi doubles. They mass flower and each bloom only lasts a couple of days so they fall before blight takes hold. We also like the species and had already set out to build a collection of most that are available in this country. Some of the species bring in a wider range of growth habits and foliage than are seen in commercial camellias. In fact, some don’t even look like camellias as most people know them. We are so besotted with little C. minutiflora  that we have several in the garden; what came to us as C. puniceiflora doesn’t look like a camellia at all and only aficionados would identify the pink flowered form of C. sinensis and the assorted yellow species we have as camellias.

The dainty flowers of C. minutiflora

We also have a good representation of autumn flowering varieties from the C. sasanqua group, which are not affected by the blight. In the days when the large flowered C. japonica were favoured, with a particular preference for the perfection of formal doubles like ‘Dreamboat’ and scores of others, the attitude to C. sasanqua was bit dismissive. They lack the solid petal texture and defined form in their blooms and are slower to establish, as nursery plants at least. In New Zealand, they were largely seen as utility hedging, best in white and even better if C. sasanqua ‘Setsugekka’. The white ‘Setsugekka’ hedge became a cliché.

Tastes can change. Now we appreciate the C. sasanqua cultivars for their mass display in autumn through to early winter, preferring that looser flower structure and simplicity. Added to that, as mature plants, most have a naturally graceful form that is easy to tidy up and enhance to create a feature plant even when not in bloom. Shapes are important all year round and shapes with good, healthy foliage that are also hardy, reliable and low maintenance are not to be disdained.

We give a lot more thought to our camellia plants these days. Many are invaluable for shelter and wind breaks. Flowers are a bonus. But not every camellia plant is valuable. If they are not flowering at all well, are not pleasing to the eye as a shrub and are not filling a useful purpose, we have no qualms about removing them. These plants used to at least fulfil one of those functions – that of mass flowering.

Lifting and limbing – finding the natural shape of a plant and highlighting it – Camellia ‘Tiny Princess’
Camellia ‘Dreamboat’

We do a lot of what we call lifting and limbing here. In a mature garden, raising the canopy and letting light in is ongoing. What sets lifting and limbing apart from simple pruning is that it is more focused on making the most of the natural shape of the mature plant. Mark is the master of this but my skills are improving. More time is spent standing and looking, then tracing where branches go than actually cutting and there is much going up and down the ladder. It is very satisfying to find the most pleasing forms within a plant and to highlight the shape by removing extraneous growth. Added to that, it is a one-off activity that just needs a bit of occasional maintenance in future years. It is possible to remove a lot without a plant looking massacred, as long as clean cuts close to the trunk or branch are made.

Cloud pruned ‘Mine-no-Yuki’

Our garden is very light on ornamentation. We don’t go in for sculptures, statuary, pots or a plethora of trellises and archways, preferring to use key plants as focal points, along with natural vistas. Mark’s cloud-pruned camellias are particularly fetching. He started on Camellia sasanqua ‘Mine-no-Yuki’ which was so huge that its weeping growth was blocking a pathway. The initial shaping took him several days up and down the ladder which was hard on his knees. He must have removed well over half the jumbled plant but found the most pleasing shape beneath. We keep it clipped to flat- topped cloud shapes. It only needs trimming once a year to maintain that form and that is a simple job that takes a couple of hours with hedge clippers. ‘Mine-no-Yuki’ is not good in bloom here. We get a few days of pristine white blooms before they get weather damaged; from then on we get a display of brown and white flowers. As a clipped, evergreen shrub it makes a splendid feature all year round.

I differentiate between clipping and pruning. Pruning is done with a pruning saw and secateurs; clipping is carried out with trimmers, be they hand-held hedge clippers or motorised trimming blades. Good pruning is a higher grade skill because the aim is to get into the plant and shape it without the work being visible – ‘blind pruning’, an older colleague used to call it. Hacking is bad pruning.

Left to right: ‘Elfin Rose’, C. puniceiflora, C. trichoclada and C. gauchowensis. All are clipped once a year.

We don’t clip many plants – ours is not a garden modelled on the clipped and corseted Italian genre – but we have a few that we like to use as punctuation points in the garden. Inside our entrance, we have a small grouping of camellias that we clip tightly once a year. The shape of each has been entirely determined by following their natural growth habit and exaggerating that. So C. gauchowensis is a plump, rounded pillar, C. puniceiflora a three tier cake stand and the somewhat insignificant C. trichoclada is a flat plinth. They are backed by the cloud pruned C. x hiemalis ‘Elfin Rose’.

Cloud pruned ‘Elfin Rose’

The problem with clipping is that it cuts every single outside leaf that then turns brown on the cut edge. This does not matter when the clipping is being done on plants with very small leaves and it is not generally a problem on the C. sasanqua cultivars which have a somewhat softer leaf. It matters a great deal if the clipping candidate has the tough, shiny, leathery leaves common to the C. japonica types. I drive past a clipped white C. japonica hedge from time to time and it simply looks awful when it has been freshly cut. I wonder if the owners went to buy the aforementioned ‘Setsugekka’ (which would have been much more successful) but the garden centre had sold out so they talked them into a white japonica instead? It was not a good choice. Keep your clippers away from C. japonica varieties is my advice; reach for secateurs instead and forget any ideas of tight-clipped shapes.

Our preferred hedging options. Left to right: C. microphylla, ‘Fairy Blush’and C. transnokoensis

We have camellia hedges ourselves but all are small leafed varieties that clip tightly to make a dense barrier over time, looking sharp-edged and smart. We also select for small single flowers that drop cleanly and break down quickly, thereby avoiding the brown sludge that large, heavy textured flowers can create when they fall. The three camellias we have used for hedging are ‘Fairy Blush’, C. transnokoenis and C. microphylla. ‘Fairy Blush’ is our first choice where we want dense hedges to around 1.5 or 1.8 metres high. It is a C. lutchuensis hybrid, the first camellia Mark ever named and the one that remains our all-time favourite with its exceptionally long flowering season. Unlike its scented parent, it is fully tolerant of sun and open conditions (C. lutchuensis is inclined to yellow in the foliage in full sun), very free flowering and, en masse, it exudes a delightful scent on warmer, sunny days.

Camellia ‘Fairy Blush’ as a clipped hedge.

We have never grown much buxus hedging here but when the threat of box blight loomed (mercifully, it has still not reached us and we don’t have the buxus caterpillar in New Zealand), Mark took the opportunity to rip out a couple of box hedges and replace them with C. transnokoensis. I think the blight might just have been an excuse really, because the main reason was that he thinks hedges should be more than just green walls; they should also contribute to the eco-system and plants that flower and attract bees and butterflies do more than just act as a visual divider. C. transnokoensis has excellent small foliage and tiny white blooms but its flowering season is much shorter than ‘Fairy Blush’ and it is taking longer to become dense in its growth.

When it comes to tight clipping, timing is important. We tend to clip hard in early to mid-spring, just as the new growth is being made. If it gets left later, the next season’s flower buds will have set and clipping will be at the expense of next season’s flowering. Sometimes we get to the C. sasanqua plants earlier; in our relatively mild climate, we have more latitude and can garden through winter without risk. We only clip once but we are fine with the softer, woolly look that develops as the seasons progress. If you want a sharper look, do the hard spring clip and then follow up in summer, but just with a light prune to tidy up the wayward fresh growths.

C. microphylla will be kept lower as an undulating wave hedge, between 30cm and 70cm high.
Camellia microphylla backed by C. yuhsienensis

C. microphylla has an even shorter season in bloom and flowers in late autumn for us but we selected it less for its white, starry blooms and more for its very compact habit and small leaves which lends it to tighter clipping where we want low, undulating hedges in the area we call the Wave Garden. It is taking some time to grow and clip into the tight growth we want, particularly because the plants Mark had raised from both cuttings and seed languished, unloved, in pots in the nursery for longer than they should have. It took us a while to plan and then plant the garden they were destined to grace. Healthier plants would have taken off faster but we can see it will work exactly as planned.

Camellia yuhsienensis used as punctuation points, backed by Mark’s ‘Fairy Magnolia White’
It is possible to remove a lot of plant without it looking as though it has been brutally attacked if pruning is considered and careful. This is getting C. yuhsienensis back to a manageable size.

Overall, we do more pruning than clipping and that is aimed at keeping some key plants from growing to their full potential. Essentially, we are trying to contain them to a certain size. We have used the lesser-known species, C yuhsienensis, as punctuation points with winter interest along the summer gardens. We love its open, starry blooms which are lightly scented and reminiscent of a michelia as well as the heavy-textured foliage which many people fail to identify as a camellia. It is not self-grooming and it is one of the few camellias I am willing to go through and brush off spent blooms which is a sign of how much it pleases me. Left to its own devices, it will reach 2.5 to 3 metres high by 2 metres wide in our conditions, getting somewhat more open as it grows. I am keeping these to around 1.6 metres high and a metre wide and that is done on a single, perfectly straightforward annual prune with secateurs and sometimes a handsaw. Each plant is reviewed individually as I work out which branches I want to take out entirely and which ones I just want to shorten. It sounds more onerous than it is in practice but my aim is always that the pruning not be visible to other people’s eyes.

Camellia yuhsienensis
A top-worked hybrid of Mark’s we named ‘Pearly Cascade’ which is unlikely to still be in cultivation. While the flower is not special, the slow, spreading growth habit kept it small and made it an ideal candidate for training to a feature plant.
A top-worked (high grafted) weeper. This came to us as ‘Nuccio’s Pink Cascade’ but that may not be an accurate name.

We have a few high-worked standard camellias, grafted a metre or so up a single, strong trunk. These are not easy to do so certainly not widely available commercially here, if at all these days. Our plants date back to when we still had a plant nursery and specialised in unusual options. The weepers are just left to weep. These are ‘Quintessence’ and one that came to us ‘Nuccio’s Pink Cascade’ but I am now doubting that name because I can’t find it on line. I scrapped all the weeping ‘Sweet Emily Kate’ specimens because the exceptionally pretty flower did not atone for the dreadful yellowed foliage.

Our other standards are slow growing hybrids from Mark’s breeding programme that are not commercially available. The natural characteristics of being both slow and dense in growth is what makes them easy to maintain. Trying it with stronger growing varieties would mean a whole lot more work fighting nature to keep the desired shape.

When we removed the garden beds around the top of the sunken garden, we retained the eight camellias and three dwarf maples as clipped and shaped character plants.

Mark is not a lollipop or pompom man. He likes these camellias clipped to low, flattened domes –  mushroom shapes he calls them, or maybe umbrellas. Again, we clip or prune just once a year and that is sufficient to keep these as statement plants.

An espaliered sasanqua camellia from another person’s garden.

I have never gone in for espalier. I am not so keen on that level of extended fiddle-faddling, myself.  But I stopped to photograph a very well-established espalier done with C. x hiemalis ‘Elfin Rose’ in a garden down the road. Unfortunately, the flowering was finished for the season so you will just have to imagine how pretty it looks with the bright pink blooms and deep forest-green foliage. It has been trained on a readymade trellis fan and is kept clipped to make a dense screen which is only about 30cm deep.

In days gone by, I used to keep a small collection of trained and clipped camellias in large containers to move around to particular locations. Each one was treated differently to emphasise individual characteristics. The reason I planted them all out or gave them away was simply because I decided that, in a garden as large as ours, having large plants in pots that need regular watering, feeding, repotting and root pruning was too much work. I prefer to work on plants already growing in the ground but the container approach may work for other situations.

Camellia ‘Fairy Blush’ again

We used to view camellias as a low maintenance, undemanding but top performing utility plant in our garden. That changed with petal blight. Now their roles have changed. We treat each plant individually and give them a lot more attention but that is what makes gardening interesting for us. We wouldn’t be without them. It may be putting a brave face on it, but I am not sure I miss those days when they were largely big blobs of white, pink or red on shiny green foliage. Times change and we just change our gardening ways to meet the new situation.

In memory of times past when we used to have mass displays of blooms like this. We refer to this one as ‘Mimosa’s sister’, not because Mark’s mother ever had a sister but because it is a sister seedling to ‘Mimosa Jury’ that Mark’s father bred and named for her.

Clip clip clipetty clip. The hedges have been done

Lloyd clipped the Camellia transnokoensis hedges to the left; Zach clipped the feature camellias to the right this year.

We don’t have a lot of clipped hedging here, I am prone to declaring. I may have to amend that. I paced them out and came to a rough estimate of somewhere over 150 metres which seems rather more than I thought. It is probably more accurate to say that we don’t have a lot of garden where the design is defined by clipped hedging. Just the Wave Garden, in fact.

Clipped Camellia minutiflora in the Wave Garden

I have been thinking about hedge trimming because it has taken up almost all of Lloyd’s work hours this week. At the same time, I saw a comment by an English gardener about currently trimming his clients’ hedges and that seemed odd to me because it is autumn there. I am guessing they trim in autumn so that they retain their sharp lines over winter. In colder climates, sharply defined shapes are often what gives winter interest in places where plants don’t flower all year round. Maybe they trim twice a year?

On the left is clipped Camellia Fairy Blush with a low buxus hedge in front. At the back is clipped totara (Podocarpus totara). You too can keep this forest giant to this size over 110 years if you keep it clipped hard!

We cut in spring for two reasons. One is that we want to look sharp for the spring garden festival starting this Friday. The other is that the majority of our clipped hedges are small-leafed camellias. Trimming those in autumn would take all the flower buds off so we trim in spring before the next season’s buds are set.

Hedges of Camellia Fairy Blush provide a demarcation line between the sunken Court Garden and the gardens either side of it.

We only trim once a year and we accept that come next autumn and winter, the hedges will be looking a bit woolly. I seem to remember that if you have hedges of teucrium or lonicera, you need to trim every four to six weeks in the growing season – and we have a growing season that lasts nine months of the year. That does not sound fun to me although maybe some people don’t mind forever trimming their garden hedges.

I can’t help but think that people who are obsessive about sharp hedges all year round might be better to make permanent walls instead – more expensive to erect but a lot lighter in maintenance down the years.

This wave hedge at La Plume was sensational.

The wave hedges we saw at Le Jardin Plume in France still rule supreme for me. I have never seen hedges like them. Alas, I may not see them again in this new world we are in.

Chupa chups to the right, umbrellas to the left

While Lloyd has been trimming hedges, Zach has been clipping feature plants. He pointed out to me that the taller michelias at our entranceway (Fairy Magnolia Blush) are more like chupa chups than lollipops, which is right because they are fully round, not like the two dimensional round lollipop. The small ones to the left we trim to an umbrella shape – so flatter on top than the rounded chupa chups.

No longer a path that terminated in an unattractive building, even if it currently terminates at the raspberry coop

Visitors who have seen our new summer gardens may recall the path that led to nowhere as we airily waved and said that we planned to move the two buildings in the way. Well, it is done. The large propagation house and Mark’s personal botanical treasure house have indeed been moved and we have opened up a new area. True, the path still doesn’t go straight through yet. It now terminates at the raspberry cage. I have served notice that can not be taken down until somebody has built me a new raspberry cage. I love the raspberry harvest more than I love the thought of a long, long vista there.

Zach gave the Podocarpus parlatorei pillars their annual trim and has started training the top over to form the arch Mark envisaged.

This year’s Taranaki Garden Festival was shaping up to be the busiest ever in over 30 years of its life span. Alas, now it is on track to be the quietest ever. The NZ Rhododendron Association were to have their annual conference at the same time and we were expecting four coach loads of rhododendron lovers on the very first morning of festival. It was cancelled this week. Northerners can’t get here, southerners no longer want to come and who can blame them? I am expecting pretty much all our tour bookings to be cancelled in the next few days.

But we will be here, bright-eyed, bushy-tailed and all prepared next Friday. It will be down to locals to fly the flag for our gardens and the associated arts trail. It is disappointing but so much of life in this era of pandemic is disappointing. At least with gardens, they will still be here next year.

Out and about, in a very limited, local way

Ixias by the railway track near Lepperton

I flashed past these eye-catching ixias (corn lilies) at speed and promptly thought that I should have stopped and photographed them. I then thought I couldn’t be bothered until a couple of kilometres down the road when I turned and went back. Are they not pretty? They are growing on wasteland beside the railway in Lepperton and the sight of them stopped me being grumpy about something else that had happened.

There is nothing choice or rare about ixias. We have them in the twin borders in several colours and they show up each year on one of the mass bulb suppliers’ catalogues. But as a wildflower, their charm seems greater to me. I was glad I had dug some to put down in the Wild North Garden where they may recreate the simple charm of the railway siding.

The rare sight of a camellia hedge in full bloom, though now past its peak

I also stopped to photograph a camellia hedge because a mass flowering camellia hedge is a rare sight for us in these days of the cursed camellia petal blight. This one is down the road from us (in a rural sense – maybe 5km down a different road entirely to the one we live on but still ‘down the road’). We used to have mass displays of larger flowered camellias in informal hedges but they are a thing of the past here. The plants haven’t gone; it is the flowering that is a memory. This particular hedge is in an extremely open situation, exposed to both full sun and wind from every direction. It confirmed for me that the extremely sheltered microclimate we have in our own garden has exacerbated camellia petal blight to be some of the worst in the world. Fungi thrive in a protected situation. It is a trade-off. That microclimate enables us to grow many other plants that would not otherwise thrive but at the expense of the japonica and hybrid camellia flowers.

Camellia ‘Waterlily’
Camellia ‘Les Jury’ to the left and Felix’s ‘Waterlily to the right. Something that had finished flowering but appears to be white at right angles in the centre.

It was Mark who drew my attention to the fact that it is Camellia ‘Waterlily’, one of his father’s early cultivars. We have the original plant in the garden here. Next to it, to the left, is a clipped hedge – now at the end of its flowering season – of Camellia ‘Les Jury’. It is the best red his Uncle Les bred so they have the Jury camellia brothers right and left of the gateway.

Each spike is a cluster of a huge number of individual flowers with long stamens on the xeronema

We don’t have a whole lot of native plants that carry gardeners’ bragging rights with them but the Poor Knights’ lily – Xeronema callistemon – is one. It grows on the rocky cliff faces on the Poor Knights islands, often washed by sea water and never drying out but never getting waterlogged. According to Wikipedia, those offshore islands of New Zealand which few people ever get to visit but are a treasure trove of unique flora, were so-named because their shape reminded the early Europeans of a bread pudding popular at the time, the Poor Knights Pudding.  There is a random piece of information for you.

Xeronema callistemon in the central row on a bank in Waitara, thriving in a regime of benign neglect

Their natural habitat is not easy to re-create in a garden situation which is why they carry some bragging rights. I am pretty sure they are also frost-tender and it takes a long time for them to reach flowering size. Despite all that, there is fine display of huge plants on a shady bank in my local town of Waitara. Prostrate rosemary festoons down the bank below them and they are flanked by some pretty scruffy trachycarpus palms but eat your heart out, gardeners who have failed with the xeronema at home. Finding a suitable spot and then allowing benign neglect seems to work better.

Poor Knights lily and Marlborough rock daisy in our swimming pool garden. Maybe they feel at home because we have a salt water filter on the pool and they can smell the salt? Or maybe not.

Our best plants are just coming in to flower. I admit we groom the plants a bit – removing spent leaves. I like the combination with the Marlborough rock daisy (Pachystegia insignis) – another cliff dweller but this time from a location which must be close to 1000km south of the Poor Knights Islands.

Trimming the hedges here is largely done by Lloyd. If you look carefully, there is tape on the bamboo to mark the desired heights and he also checks with a string line.

Meantime, it is all go on preparing the garden for the Taranaki Garden Festival, opening on October 29. We have our fingers crossed that we stay at level two which enables it to go ahead. We will be awfully miffed if we get Covid Delta in Taranaki with a last-minute cancellation after all this work.

Kia kaha. Stay sane and stay safe in these trying times.  We are living through an event that will become a significant point of history for future generations to study. It is not a comfortable position for anyone.

Plants that do not know their place – high maintenance culprits

Dudley on the bridge amidst 'Snow Showers'

Dudley on the bridge amidst ‘Snow Showers’

You will never see me advocating enthusiastically for low maintenance gardening. It is not our style. But I do think some plants need to know their place in life. Some clamour for way more attention than they deserve. We have been thinking about plants that are unjustifiably high maintenance. First to go here were almost all plants that require chemical intervention (spraying) to keep them looking good – or even alive. Goodbye underperforming roses and badly thrip-infested rhododendrons. These might be great in other climates, but here? No. Next in the spotlight are some of the other high maintenance plant options.

Who doesn’t love wisteria? But unless you are willing to give them the attention they require, they are best admired in somebody else’s garden. More than any other plant I can think of, they cannot just be planted and left. Miss a prune and it only takes one season for them to crack the spouting – I know this from experience. They also put out runners that R U N considerable distances. What is more, if you prune them incorrectly, they don’t flower which really defeats the purpose of growing them.

We dug three wisteria out this winter. Two were not flowering well enough to justify keeping them (not enough light, I think). The third was running amok in a wild area and threatening world domination. We have still kept about seven plants, including two on our bridge which are great performers but I am meticulous about pruning them both in summer and winter. Even so, they can join hands in the middle, trying to block passage through.

Climbing roses are another plant that I personally think are best admired in somebody else’s garden. I once planted ‘Albertine’ over an arch in the vegetable garden. It looked lovely in flower but then it produced many long whips covered in fierce thorns. Not only were they waving away waiting to ensnare anyone who walked down the path, pruning was a Major Mission. When it took me the better part of a day to prune it and tie it in, I decided that the rewards did not justify the effort. The advice often seen in English media about letting climbing roses scramble through trees and not worrying about pruning them at all does not translate to our gardening conditions. Any rose that strong is more likely to collapse the host tree, or swamp it at least. We are trialling some semi-thornless pillar roses but rampant, thorny climbers – no thanks.

magnolia-little-gemAny potentially large tree planted in the wrong place is going to be high maintenance. Vegetable time bombs, we call them. I see it with Magnolia grandiflora “Little Gem” in urban gardens more than any other plant I can think of. Aforementioned “Little Gem” is only little by comparison with something that might equally be called “Extremely Giant Gem”. It is not a dwarf tree. Plant it in a confined space – I know of a twin row of five or six aside lining a very narrow driveway in town – and it will either be high maintenance on an ongoing basis to keep it confined or an expensive removal job when it becomes a major problem.

Clipped hedges can give great definition in a garden – green walls, really. But I rate any hedge that needs trimming more than once or twice a year as high maintenance. While some people are quite happy to trim hedges frequently to keep sharp-edged definition, I see that activity as being like vacuuming the house. There is nothing creative about such a repetitious activity. To me, hedges are   utility tools, a background, not the centre of attention so they shouldn’t be demanding as much or more attention as the foreground stars of the garden. I would not plant any in teucrium or lonicera for these reasons.

A blight upon your buxus!

A blight upon your buxus!

Buxus used to be infinitely useful and undemanding hedging plant. But with the advent of buxus blight in many areas, that status has changed. I know of gardeners who are spraying their buxus hedges every few weeks, just to keep them leafy and to hold blight at bay. Woah there! Aside from environmental considerations (even if it is just a copper spray, the long term use of that is not good), it turns a handy, low maintenance plant into a high maintenance option.

Camellia Fairy Blush

Camellia Fairy Blush

Give me our small leafed camellia hedges any day. A hard prune in early spring followed by a light tidy-up in autumn is all they need. Also they light up a winter’s day while feeding the birds and over-wintering monarch butterflies. Camellias ‘Fairy Blush’, transnokoensis and microphylla are our preferred options.

We can and do fuss over some plants but utility plants? No. They need to know their place in life and that means not being so demanding.

First published in the September issue of NZ Gardener and reprinted here with their permission. 

 

 

Garden lore: July 20, 2015 Petal blight, white camellia hedges and winter pruning

“One has a lot, an endless lot, to learn when one sets out to be a gardener.”

Vita Sackville-West, A Joy of Gardening (1958)

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Petal blight

Petal blight

After writing about Winter Whites last week, referencing the ubiquitous white camellia hedges, of course I noticed this hedge on my way to town. My eye was drawn to the composition of brown and white flowers. It is a japonica camellia, though which one I am not sure. Closer examination revealed a bad case of petal blight, even this early in the season. There are two main giveaway signs. The first is the brown flowers hanging on to the bush. Most modern camellias are what is called self-grooming. They are bred to drop their spent blooms but those affected by petal blight hang on. The blighters. The second sign is shown by turning over a brown bloom and removing the calyx that holds the petals together. There is the tell-tale white ring of death – fungal spores. There is no remedy. You either live with it or you remove the plants.
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I have never been a fan of japonica camellias for hedging. The foliage can go a bit yellow in full sun and both leaves and blooms are too big. Smaller leafed camellias, seen in the sasanquas, some of the species and the hybrids look much better. Miniature single flowers usually fall cleanly and disintegrate quickly, avoiding the sludgy brown effect below.

Camellia transnokoensis

Camellia transnokoensis

While our C. transnokoensis hedge needs to thicken up yet, we are charmed by its floral display. The sasanqua ‘Silver Dollar’ is also an excellent hedging choice. While the small flowers are nothing special viewed close-up, it is one of the first sasanquas to bloom for us and one of the last so it has exceptionally long season allied to compact growth and small leaves which are a good, dark green.

Camellia sasanqua Silver Dollar - an excellent hedging option

Camellia sasanqua Silver Dollar – an excellent hedging option 

While some claim that sasanquas can get petal blight, we haven’t seen it on our plants. And although the single flowered species and hybrids are not necessarily resistant, most set large numbers of flowers but each bloom only lasts a few days so they fall before blight takes hold.

On another topic, winter is pruning time. I did the wisterias on Friday. This is one plant family I recommend removing totally if you are not willing to prune them. They have dangerous proclivities. Most of the roses are done and I have started on the hydrangeas. Those in colder climates may be better to wait another month before tackling the last two because pruning encourages new growth which is vulnerable to frosts. The pruning guides I did several years ago as part of my Outdoor Classroom series give step by step instructions if you are not sure where to start – wisteria, hydrangeas, roses.