Tag Archives: topiary camellias

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.

The difference between clipping, hacking and blind pruning

Camellia yuhsienensis – not self grooming but apparently resistant to camellia petal blight. To save you the bother of contacting me: no, we no longer sell any plants at all these days and I think it is unlikely that this particular camellia is still commercially available in New Zealand.

‘Blind pruning’ is not, as some might assume, an activity carried out by the visually impaired. An old horticulturist introduced me to the term years ago. Essentially, it is pruning that is carried out so that the end result does not show evidence of it, even though it can be quite extreme. Skilled and careful pruning, as opposed to clipping or, at its worst, hacking. It is a higher-level skill.

I lacked confidence in my ability to carry out extreme pruning without making it obvious so usually left it up to Mark but this year I doubted that he was going to work to my timetable and told myself I can do it. Camellias are obliging plants to work with because if you get it wrong, they come away again with new season’s growth able to sprout from bare wood.

Clipping is done with hedge clippers. We do it with our camellia hedges and with some shaped camellias. It is what gets the sharp definition. The first shaping takes skill – and time – but from then on, any reasonably capable person with a set of sharp clippers can maintain that shape.

Before…

After. Definite hacking on the middle plant but that was the only option to get back the shape I want

Extreme cutting – hacking, as I call it – is unsightly until the fresh flush of growth covers the bare ends but it is sometimes the only option. In this border, I wanted to get the middle camellia, ‘Spring Festival’ back to a mounded growth sitting lower than the four standards behind it. With very little foliage left in the middle of the bush, there was no alternative to extreme cutting and now is the time of the year to do it because it will put on a flush of new growth very soon. It won’t flower well next year but should hit its stride again in 2022.

The four standard camellias behind are all Mark’s hybrid ‘Pearly Cascade’ and they needed more love. Between the two photos, I have removed at least a third of the growth and they look better for it. You would have to look close into the plant to find the fresh cuts because it is not obvious to view. That is blind pruning, as I understand it.

Before…

… and after

The feature camellias in the sunken garden area have not had my attention for the last two or three years and they did not look lovely this year. This is ‘Pearly Cascade’ again, grown au naturelle rather than the grafted standards in the earlier border. It is a pretty enough little camellia although the flower is not by any means unique. It is very like ‘Nicky Crisp’ in bloom. It was as much the habit of growth that encouraged Mark to name and release it. It keeps excellent foliage in full sun and stays low with arching, spreading growth rather than shooting upwards. This plant must be 15 or 20 years old and has just received the odd passing nip and tuck to keep it to size.

But that spreading foliage is dense and doesn’t allow spent blooms to fall. Breeding for self-grooming – where a plant drops its spent blooms – was a big focus for Mark’s camellia breeder Uncle Les and his father, Felix. It stops that ugly look where sludgy brown blooms stay on the bush. But when the foliage is too dense, the blooms can’t fall and that has become even more of problem with rampant camellia petal blight.

‘Pearly Cascade’

Mark is unusually derisive (he not a man much given to derision) about the idea of ground cover camellias or michelias. Both are heavy blooming plants and when they are spreading, as ground cover is, there is no way those spent blooms can fall so they just congregate as a mush on top.

I started on this plant by nipping back the top to the height I want, followed by shortening the sides. This is all work done with secateurs. Then it is an exercise in delving into the body of the plant and reducing the dense growth – taking out wispy branches, short growths and badly crossing branches first and then selecting which remaining stems are superfluous and can be cut back flush to the trunk. It is precise work and it takes time. There is much stepping back to look. In the end, I reduced the plant by about 50% and it looks a whole lot better for it.

Before…

The two C. yuhsienensis were more of a challenge. They had grown huge without us really noticing, larger than we want in this area. This is a beautiful species but it is not self grooming at all. Mind you, with all those spent blooms still on the bush, we examined them and can report that it appears to be impervious to camellia petal blight so that is a bonus.

… and after

and the matched plant on the other side

I needed the kitchen step ladder and a pruning saw as well as secateurs but the approach was the same – reduce the height, narrow the spread and then thin the middle. Even I was surprised by how much I removed but the plants look a whole lot better for that. Looking from above, I can see that I need to remove more from the right-hand side of the one at the front to get a better balanced plant. The four lollipop camellias – another compact cultivar of Mark’s that we call ‘Pink Poppet’ but never released commercially, still need to be trimmed but they are a hedge clipper job. They get shaped like an umbrella or mushroom because we want that flattish, curved shape rather than round top-knots.   The tops are currently out of proportion to the stems on these grafted standards.

Those are piles of prunings lying on the grass beside the four plants trimmed so far

Mark’s advice, given to me often down the years, is not to keep lifting and trimming up plants. Over time what evolves – and we have a few examples of these from my earlier efforts – is a plant with bare legs that looks as though it has been grazed by stock up to the level where they can no longer reach. That is why the top down, outside in and then thinning the interior works better to retain a more natural form. If you plan to keep a plant clipped or trimmed, longer term it is easier if you keep the height down to what can be managed without a ladder.

It took hard pruning to achieve this shape, now it is maintained by a simple annual haircut with sharp hedge clippers

Clipping gives sharp definition, at least for a couple of months after the annual trim

Postscript

I didn’t set out to write a definitive piece about pruning camellias but will add two points and links to earlier advice on chainsaw pruning.

Firstly, if you are ever pruning camellias with variegated flowers and foliage (often showing as mottled yellow and green leaves but not every leaf will be mottled), you are likely pruning a camellia which has a virus that causes such variegations. Make sure you disinfect your cutting tools afterwards, before touching any other camellias or you risk transferring the virus. Virus is not always bad but it will weaken the plant and you probably don’t want mottled foliage throughout your camellias.

The mottled leaves and the irregular variegation on the flowers are a good indicator of the presence of virus

Secondly, if you are going to do the chainsaw massacre number and cut a camellia off close to the ground, we recommend cutting about a metre up and leaving some framework to the plant. If you cut it off close to the ground, it will re-sprout as a thicket and you will never get a good-shaped plant out of it, though you will be able to clip to a mound. If you leave some branch structure and a central leader (main trunk), you will get a better-looking plant in the long term.

Now is the time (late winter to early spring here) to carry out such extreme pruning so the fresh growth that will sprout soon can be made on the bare wood.

This piece from 2016 shows the results of chainsaw pruning six months later.

Back in 2011 when I used to do step by step sequences for the newspaper, I covered hard pruning of camellias. My photography has improved a bit since then but the information is still relevant.