Category Archives: Abbie’s column

Abbie’s newspaper columns

The story of the red magnolias

Vulcan to the left, Lanarth to the right

Vulcan to the left, Lanarth to the right

Few people realise that the story of the red magnolias is a New Zealand story. Probably even fewer realise that when it comes to stronger colours in magnolias, we get the best colour in the world here.

I am talking about deciduous magnolias. The evergreen grandiflora types are resolutely white in bloom and adding colour to the softer-leafed, evergreen michelias is very much a work in progress. But deciduous reds, we do well.

Most deciduous magnolias are in the white and pink colour range and very lovely many of them are too. But with many plant genus, there is always that quest to extend the range of flower form and colour, to build on what happens in nature to get a better performing, showier garden plant. Some of it is about pushing boundaries to see what can be done. A truly blue rose is still an unfulfilled quest but it is highly likely it will come sooner or later.

Some would argue that we do not yet have truly red magnolias and there is truth in that. There is no scarlet, no fire engine red. All the red varieties on the market still retain a blue cast to them and fade out to pink or purple tones rather than to the orange end of the colour spectrum. But if you line one of the red magnolias up against a purple one, it is clear that they are a different colour.

This (liliiflora 'Nigra')

This (liliiflora ‘Nigra’)

I started by saying that the story of red magnolias is a New Zealand story. In fact it started as our family story. Back in the 1970s, Felix Jury wondered if he could get a large flowered, solid coloured red magnolia on a smaller growing tree. He started with the red species – M. liliifora ‘Nigra’. In itself, ‘Nigra’ is a nice enough, low spreading magnolia but nothing showy. He crossed it with the very showy, indubitably purple ‘Lanarth’ (technically M. campbellii var. mollicamata ‘Lanarth’). The rest, as they say, is history.

crossed with this (Lanarth)

crossed with this (Lanarth)

‘Vulcan’ took the magnolia world by storm. This was the break in colour and form. It is not perfect. We know that. The flowers do not age gracefully. It flowers too early in the season for some areas. It does not develop its depth of colour or size of bloom in colder climates and is a shadow of its own self in most UK and European destinations. But after more than 20 years, it is still hugely popular and very distinctive, particularly in Australia and New Zealand. It set the standard and it opened the door to other cultivars.

... and the result was this: Vulcan

… and the result was this: Vulcan

In due course, but slowly, slowly, Mark followed on from his father. He raised hundreds of seedlings and named ‘Black Tulip’ (the darkest of the reds), ‘Felix Jury’ and ‘Burgundy Star’.

Fellow breeder, Vance Hooper, started his programme on the reds and he has named several. The best known is ‘Genie’. Like Mark, he is continuing determinedly down the red magnolia line in the quest for perfection, although improvement or variation will do as steps along the way.

There are other reds on the NZ market now, though none from sustained breeding programmes to match those undertaken by Mark and Vance.

Black Tulip - the first of the second generation red magnolias

Black Tulip – the first of the second generation red magnolias

It appears that it is ‘Black Tulip’ that has enabled the rise of new selections in UK and Europe. It sets seed and every man and their dog is now raising seed and naming selections. Mark is a little wry as he comments that he raised hundreds of plants to get one ‘Black Tulip’ whereas others raise a few seed and name several. He has an ever-decreasing level of patience for amateurs who, as he says, “raise five seedlings and name six of them” based on the first or second flowering only, when he is still assessing seedlings which are 20 years old and showing their adult form, habit and performance.

So New Zealand is about to lose its position of world domination in the red magnolias. But we still get better colour here than others do overseas. There is no certainty yet as to whether that is related to our mild climate, our soils, the root stock used or the quality of light – likely a combination of all. ‘Felix Jury’, which can flower strong red for us is more an over-sized pink flamingo so far in European gardens. We are just relieved that it achieves full-sized flowers and plenty of them, even if it is not red in their conditions.

Magnolia Felix Jury at its best here

Magnolia Felix Jury at its best here

The quest for truer reds continues. A red that loses the magenta hue. Mark is assessing several with which he is quietly very pleased. They are not scarlet but they are an improvement in colour. Just don’t hold your breath. This is a long haul.

Finally, while NZ leads the world in reds, it was USA which gave us yellow magnolias. These all descend from one yellow American species – M. acuminata. I just say that for the record. Credit where credit is due.

First published in the Waikato Times and reprinted here with their permission.

The tyranny of monocultural gardening

We have abandoned the tyranny of the perfect lawn

We have abandoned the tyranny of the perfect lawn

Monocultures. We have been talking about horticultural monocultures – the cultivation of a single crop on a large scale.

I saw a monoculture in Malaysia – palm oil. The accompanying photograph was taken from a moving bus and shows a relatively recent planting. As palm oil plantations go, it is not one where native forest has been cleared for commercial purposes and no orang-utans were endangered for this one – that is happening in Indonesia more than Malaysia. But palm oil is an extensive monoculture.

Palm oil - the increasingly common monoculture of some Asian countries

Palm oil – the increasingly common monoculture of some Asian countries

In this country, we have a localised but more extreme example of the risks of monoculture in our golden kiwifruit. As I understand it, that was not only one crop – it was one clone. That means that pretty much all the golden kiwifruit plants descended from the same original specimen. So when that plant selection succumbed to the dreaded Psa bacterial disease, it affected all plants equally and threatened the very existence of the crop. The race is on now to find clones which are resistant to Psa.

You can’t buy plants of golden kiwifruit in this country because that one clone that was used and the replacement clone are restricted to licensed commercial growers only. In recent years, Mark has been raising seedlings from fruit we have bought and this year we had minor harvests. Because this fruit does not grow true from seed (it needs to be vegetatively propagated), our seedlings will be genetic variations. The fruit so far is not of the same size and consistency of the commercial selection and the taste varies between plants but it looks as if we may have some viable options amongst the crop to keep ourselves supplied.

Raising our own selections of golden kiwifruit gives genetic diversity

Raising our own selections of golden kiwifruit gives genetic diversity

But where do monocultures fit in when it comes to a gardening context? Matched avenues of the same tree. Massed plantings of a single selection in the modern landscape style. Lawns. Of those, lawns are probably the only monoculture in a technical sense, but they are a major issue.

Matched avenues can look fantastic when they are at their best. They give a beguiling formality and structure to a garden or landscape. When they are at their best. The problem is that plants are living things and don’t always oblige by growing uniformly. I am sure some readers will be nodding in wry agreement. Then there is the problem if a plant dies. Matched avenues with gaps are nowhere near as pleasing. And you are faced with a conundrum. Do you leave the gap? Or replace it with the same plant selection which will almost certainly be a different size and stick out like a sore thumb for years to come? And how do you know that the affliction that killed the missing plant isn’t in the soil and therefore likely to attack the replacement plant as well? Replace the dirt as well, maybe? It is often difficult when things go wrong.

Many modern landscapers favour massed plantings of a single plant variety. It is a broad brush technique which can be visually effective, if you like that look. But if you have a problem, you end up with the acne look which is not so nice at all. A few dead lavenders amidst your simulated fields of Provence, massed rust-spotted renga renga lilies which look as if they have chicken pox – this can easily be your lot if you favour the monocultural approach. Or indeed, you may lose the whole patch at once which can be expensive when it comes to a quick-fix replacement.

Nature of course does not generally grow as a single species. In the wild there is often a dominant species but around that, there will be a host of other plants in a natural mixed colony. That is what makes it nature.

Nowhere do we fight nature more than in the highly valued lawn. There, it is often decreed, the only plants to be accepted are the selected grass species – often rye and fescue. Anything else is an interloper to be weeded or poisoned out. That is a never-ending battle yet we persist in demanding the perfection of the monoculture of lawn grass. Lordy lou but I was reading about an obsessive English gardener this week who is so proud of his lawn that he tends it constantly and mows it with pride six times a week! I looked at the photo – a bowling green style with five brown patches where he had clearly sprayed out weeds.

We have made the conscious decision to abandon this futile quest for lawn perfection. As long as it is green, fine-leafed and able to be mown, it can stay. Perhaps more controversially, Mark tells me that he has decided the flowering clover and self-heal can stay. He likes the patches of colour and the fact that these flowering lawn plants feed the bees and butterflies. We are headed down the mown green meadow path rather than the garden lawn. No monocultures here. The more experience we get in gardening, the more we favour a natural style which works with, rather than against, nature.

First published in the Waikato Times and reprinted here with their permission.

The pros and cons of the campanulata cherries

Manna from heaven for the tui

Manna from heaven for the tui

Taiwanese cherries, Fomosan cherries, Prunus campanulata – they are one and the same and around this time of the year are explosions of candy pink which bring tui to the garden. In our case, it is not one or two tui. We could count them by the score if they would just sit still long enough for us to carry out a census.

Mark was not too sure about the tui which seems to have mastered the sound of vuvuzela. But I digress.

Love the trees or hate them, the tui have no qualms at all. The nectar is manna from heaven to them. And therein lies the problem. I was contacted recently by someone who is crusading against the sale and planting of campanulata cherries and I was only relatively sympathetic because I think we are in danger of throwing out the baby with the bathwater.

The problem is the seeding habits of some campanulatas. Many set prodigious amounts of seed which is then spread far and wide by our bird population. There is an alarmingly high rate of germination. The seedlings grow rapidly and after the second season, plants are too big to hand pull out. If you cut them off, they grow again. So bad is the problem that they have been banned in Northland and this correspondent would like to see them banned everywhere.

“There are loads of better trees for Tui such as Kowhai, Rewarewa that can be available at the same time” he claimed. I don’t want to be picky with someone who genuinely cares for the environment, but on a property packed with food for the birds, I have never seen a plant as attractive to tui as the campanulata cherries. Besides, in late winter, neither kowhai nor rewarewa are in flower yet.

I mentioned babies and bathwater because the problem is seeding. There are sterile forms of campanulata and both gardeners and tui alike may rue the day if ALL campanulatas get banned, even the named forms that never set seed. This is a problem we gardeners have brought upon ourselves. The record of garden escapes into the wild is not a proud one and too many gardeners don’t take responsibility for their weeds.

Prunus Pink Clouds - one of the sterile forms raised here by Felix Jury

Prunus Pink Clouds – one of the sterile forms raised here by Felix Jury

Mark’s father, Felix, was a fan of the campanulatas and he bred a few. “Pink Clouds” has an attractive weeping habit and an avenue of them has been a feature at Auckland Regional Botanical Gardens. I assume it is still there. “Mimosa” is more upright and flowers a little later. “Petite Pink” is probably no longer available commercially but is a dear little tree that never gets much over two metres in height but has all the appearance and shape of a proper tree. The thing that sets these three apart is that they are all sterile. They don’t set seed so are never going to become weeds. All three are in that candy floss pink colour range.

Prunus “Felix Jury” was named for him by Duncan and Davies (it is not the done thing, dear readers, to ever name a plant after yourself) but it was of his raising. It is a much deeper colour, carmine red, and a small growing tree. What it is not, alas, is sterile so if you see it being advertised as that, the nursery or garden centre is wrong.

It seems to be quite difficult to find reliable information on the seeding habits of other cultivars on the NZ market. If anybody knows more on this topic, please let me know. Every year at this time, Mark starts to talk about doing some more work with campanulatas to raise more sterile forms. We know which ones are sterile in the garden but the best one is a rather large tree for most people on small urban sections. It would not allow you to fit your house on the plot as well.

Petal carpets supreme

Petal carpets supreme

I can also tell you that one of our most common weeds here is seedling cherries and we are vigilant and persistent. If you live anywhere near native bush or a reserve, you should take great care to grow only sterile forms or to avoid them altogether if you are not sure. If you live in town with a seeding specimen, your neighbours probably grit their teeth at the seedlings that pop up in their place.

If you can manage the weed potential, the explosion of bloom in late winter is wonderful. Taiwanese cherries flower much earlier than their Japanese counterparts and are nowhere near as susceptible to root problems in wetter climates, so they live longer. Nor do they suffer from witches’ broom which can take over the Japanese types. It is when part of the tree grows much more densely and vigorously and fails entirely to flower. Left to its own devices, witches’ broom can take over the entire tree and the only way to deal with it is to cut out affected sections. It is very obliging of the campanulatas to be resistant.

The tui would be most grateful if we could just get this right for them before all campanulata are banned are noxious weeds.

First published in the Waikato Times and reprinted here with their permission.

Tropical gardens re-created in Asian hotel-style

The distinctive spindle palm or Hyophorbe verschaffeltii at Kota Bharu airport

The distinctive spindle palm or Hyophorbe verschaffeltii at Kota Bharu airport

I mentioned I had been to the tropics. It was Malaysia and included the magical Perhentian Islands which were pretty much a perfect tropical hideaway. Waving palm trees, golden sand, warm sea with coral reefs just off the beach, no roads, so no vehicles, not even motor bikes. All transportation was done by small boat and wheelbarrows. What they did have was a sewage system and a daily rubbish collection (by boat) which is always reassuring.

The wheelbarrow as the main transporter of freight

The wheelbarrow as the main transporter of freight

Did I come home with a yen to re-create my holiday experience by building a tropical garden? Well, no. See, there is something missing here. The temperatures in the tropics are consistently in the 30s. Soggy, cold tropicalia in winter does not seem so evocative of warm holidays, in my opinion.

Many others do not share my reservations, however, and the tropical garden has become increasingly de rigueur, particularly in Auckland but also in points further south where the folly is magnified by even cooler temperatures.

It occurred to me that we may have evolved our own tropical gardening style in this country. It is perhaps best described as “cool climate Balinese-hotel-style” or, if you have been to Bali, even more specifically as “Ubud hotel-style”. I have never seen that garden genre beyond a hotel environment in the tropics and it does not reflect the wider environment.

In Malaysia, the closest I saw to domestic gardening was more akin to a food forest. The focus was on production, not aesthetics, so tended to feature a mango or two, coconut palms, plenty of bananas and maybe a breadfruit. Ornamental gardening is more likely to be limited to a bonsai bougainvillea in a pot.

Nor does the forest resemble a tropical garden as we understand it and our domestic, cooler climate version cannot be seen as an interpretation of that. Besides, we lack the monkeys (big, long-tailed ones ripping the beachside abutilons apart when I saw them).

Fake trees in Kuala Terengganu

Fake trees in Kuala Terengganu

Plantings for beautification are clearly the domain of the public sector and commercial entities (hotels, in particular). Growing conditions are pretty forgiving in the tropics. They can often cut things off and stick them in the ground with no special preparation and a reasonable expectation that they will grow. I saw Cordyline terminalis treated in this very fashion, growing in pure sand. So it was a puzzle to me as to why the riverside in Kuala Terengganu was furnished with fake trees. Fake trees designed to look like Norfolk Island pines and oak trees colouring up for autumn, in fact. Bizarre. Yet the street trees included the much favoured and very fragrant Michelia alba which is devilishly difficult to propagate in this country.

Blocking off a street in Kota Bharu

Blocking off a street in Kota Bharu

As in so many Asian countries, it is possible to beautify cities with planters, often ceramic. Indeed, I saw a row used to temporarily block off access on a road in Kota Bharu. Anyone want to take bets on how long these would last in any New Zealand city? It is just one of those unspoken reminders of the vandalism and theft we live with. No council is ever going to contemplate using something as easily destroyed, let alone putting little clipped topiaries into them.

The two dimensional traveller's palm is in fact not a palm at all (Ravenala madagascariensis,)

The two dimensional traveller’s palm is in fact not a palm at all (Ravenala madagascariensis,)

Palms are planted everywhere and the public plantings go well beyond the ubiquitous coconut palms and the utility monoculture of the palm oil plantations. The beautiful bismarckias and curious two dimensional traveller’s palms (which is not a palm but actually related to strelitzia) are certainly stand-out plants.

Frangipani - usually seen as a hotel garden plant

Frangipani – usually seen as a hotel garden plant

Underplanting? The only places I saw underplantings were on roadside verges and in hotel gardens. These are commonly the tropical crinums and ornamental gingers. The gorgeous frangipanis which we associate strongly with the tropics are mostly in hotels. Of course these are Central American plants, not Asian. Mind you, so too is the bougainvillea and it has done pretty well in establishing itself as a first choice plant in warmer areas across the globe.

All of this made me realise that the many “tropical gardens” in tropiNZ are eclectic mixes of plants from around the world put together in the classic layered style, but tidy. We won’t accept the wild abandon of tropical growth, the droop of scruffy banana leaves, the debris and litter of the forest floor. No, this is warm climate plants put together with a little tasteful Asian ornament or two, straitjacketed into suburbia.

In fact the model is those immaculately groomed gardens you find throughout Asia in better quality hotels. Presumably for many such garden owners, the evocation of happy, holiday memories centres primarily on their hotel and the hotel pool. It does not have a whole lot to do with the wider environmental or actual gardening in the tropics. As I said, Ubud hotel-style, but without the warm temperatures.

First published in the Waikato Times and reprinted here with their permission.

The Winter Garden

Magnolia Lanarth has a short but glorious season

Magnolia Lanarth has a short but glorious season

I have been away for a couple of weeks. To the tropics, no less, but I need to let the experience percolate in my brain a little longer before I can translate it to anything of relevance for gardeners in our temperate climate.

What amazed me was coming home to our winter garden. When I left in mid July, the earliest magnolias were just showing colour and the first blooms, along with some of the narcissi. By early August, we have trees full of bloom. The garden is awash with scores of tui as the campanulata cherries flower. I briefly thought of writing about plants for winter colour but there is just so much in flower that it would quickly descend to a boring list.

If narcissus could look startled, these cyclamineus  growing in the park certainly do

If narcissus could look startled, these cyclamineus growing in the park certainly do

This is our winter, dear readers. Technically spring does not start until September 1. Gardening is different here to many countries.

If you have looked at British and northern European gardens, there is a long spell in winter when nothing happens. People basically put their gardens to bed and retreat indoors. A heavy dependence on deciduous perennials means that gardens which are full of foliage and bloom in warmer months look dead in winter. The majority of their trees are deciduous so become bare skeletons. It is why the definition of form becomes hugely important because that is all there is to look in the depths of winter. Hardy plants like buxus, yew and conifers give accents which are often the only statement plants in those cold months.

The same is probably true of many inland areas in the world (outside the tropics) where temperatures plummet. My Canberra-resident daughter is always astonished when she comes home in winter to see how lush and colourful we are compared to her arid, hard conditions.

Those who shun deciduous plants miss out on the wonder of plants like Magnolia Vulcan

Those who shun deciduous plants miss out on the wonder of plants like Magnolia Vulcan

For starters, our native plants are all evergreen. So too are most of the ornamental plants we favour in our gardens. Over the years, I have met a swag of customers who point blank refuse to have anything deciduous in their garden, which I think is a bit of a short sighted view. Some of the showiest plants of all are those which go dormant in the colder months and then leap into spectacular display – magnolias, for example. To my mind, there is a place for both evergreen and deciduous plants in gardens.

I do, however, find it curious when I see people unquestioningly grabbing the fundamentals of garden design from other climates without considering the application to our conditions. Most of us like some element of design and definition in our gardens, though there are looser styles which don’t rely on these – meadow, woodland, prairie and food forests are examples. But that definition is not essential to give us something to look at in winter.

Similarly, I am inclined to silently snort when I hear people pontificating that foliage and form are the most important elements in plants because flowers are but transient (or worse, vulgar). I think we should celebrate living in a climate which is so temperate that we can have flowers and seasonal colour twelve months of the year, that we don’t need to put our gardens to bed for winter (or indeed for hot, dry summers) and that the clarity of light and the brightness of the sun seems just as great in July and August as it is in January. We just have shorter daylight hours, lower temperatures and a few more storms.

Being so temperate, few gardeners in this country have conditions where there is a sharp seasonal change. Most of us just drift imperceptibly from one season to the next with flowering extended over longer periods. The mid season camellias are at their peak here – more winter than spring flowering in this country. The snowdrops are passing over, but the dwarf narcissi are flowering all round the place and many of the lachenalias are blooming. Daphne scent hangs heavy in the air. The earliest rhododendrons are blooming already, michelias are opening.

And the magnolias. Do not forget the magnolias. Lanarth has a short but spectacular early season. M. campbellii is at its peak, red Vulcan is opening more flowers every day. The most spectacular time of our gardening year is upon us already, and it is still winter.

I rarely complain about the winter garden here.

While not usually fans of variegated flowers, The Czar var on the back lawn is an exception

While not usually fans of variegated flowers, The Czar var on the back lawn is an exception

First published in the Waikato Times and reprinted here with their permission.