Tag Archives: Abbie Jury

Tikorangi notes: Friday 16 July

Latest posts
1) Early, frilly and fragrant – one of the first rhododendrons for this season is R. cubittii.
2) Exotic trees versus native plants – Abbie’s column (spare me from politically correct ignorance).
3) Cranberry update
4) In the garden – tasks for this week.

Our magnificent Podocarpus henkelii will see the nursery capillary beds surrounding it both come and go in its lifetime

Tikorangi update:
I was listening to a radio interview last weekend with Peter Arthur, a keen dendrologist and NZ’s foremost retailer of garden and plant books. In a country where it is currently quite difficult to sell any plant which is not a vegetable or a fruit tree, he was asked to predict what the next big gardening craze will be. He didn’t hesitate: trees. A return to trees.

I thought of Peter’s comment as I looked at a beautiful specimen of Podocarpus henkelii. When Mark established the nursery here, he worked around existing trees on site so we have tended to have obstacles – a citrus tree amongst the vireya rhododendrons with the overhead shade cloth cut around to fit, an eriobotrya in the hosta block – and this magnificent African podocarpus set amongst the capillary beds. Now the day has come, as we wind up the nursery, that the capillary beds will go and the P. henkelii will be accorded the status it deserves as part of a planned new garden. It will have to share the limelight with the planned Palm Walk but it has at least four decades on the palms and will no doubt retain its status as the senior plant in this new area for our lifetime. I hope Peter Arthur is right and we will see a wider appreciation of the magnificence of trees. A utility apple tree is not, I think, a match for our P. Henkelii.

Flowering this week: Rhododendron cubittii

Early, frilly and fragrant - Rhododendron cubittii

Early, frilly and fragrant - Rhododendron cubittii

The early rhododendrons are just starting to flower and amongst them is the gorgeous R.cubittii. We tend to take our ability to grow these delights for granted but there are many rhododendron enthusiasts in the world who would sell their soul to be able to have these strongly scented and somewhat exotic types in their gardens. Cubittii hails from Burma, first collected around 1875 – long before that country became renamed Myanmar and shut its borders. Rhododendron buds at the point of opening are a lovely feature in themselves and cubittii has buds in dusky pink which open to big, frilly flowers, mostly white with a yellow throat and pink flush on the backs of the petals. The scent is sufficiently strong to hang in the air around it.

Cubittii is one of the better options for warmer areas because it is largely resistant to the dreaded thrips which turn leaves silver. Grown in full sun, it makes a compact shrub of about 1.5m x 1.5m (the sun encourages bushier, lower growth whereas shrubs tend to stretch and reach for the light in shadier conditions). I have always advised people in cold, frost-prone areas to shy away from this variety but I am told on excellent authority that it does well in Palmerston North in sheltered positions. If it grows well there, it can be grown pretty much anywhere in Taranaki, bar sub alpine areas or the coldest inland valleys. Just plant it in the lea of some trees to protect the early blooms from frosts.

It doesn't have to be all or nothing – using native plants in our gardens

A magnolia to the left and silver birch to the right, silhouetted against the winter sky

A magnolia to the left and silver birch to the right, silhouetted against the winter sky

Mark has been hiding indoors on bad weather days, watching Victory Gardens on the Living Channel. It is not that it is a very good American programme, he is just addicted to TV gardening. But he was a little shocked recently by presenter, Jamie Durie. Now we are not going to be critical of said Australian who has done a great deal to sex up gardening in his native land and who is a young man of considerable talent. He has also managed to cross over successfully to American TV and we love him because it was he who has twice promoted our very own Cordyline Red Fountain on the Oprah Winfrey Show. Our home grown gardening celebs, such as they are, don’t fall into the same league. I don’t think any of our local candidates would have an alternative career stripping for Manpower Australia. But I digress.

There was Jamie, talking with passion about Australian native plants, brandishing what looked suspiciously like a New Zealand cabbage tree. It was. Our most common cabbage tree is Cordyline australis, you see, but australis does not mean it comes from Australia. The kind interpretation is that our iconic tree is now Australasian, just as our soccer team briefly enjoyed that curious status. Australia does have its own members of the cordyline family including congesta, fruticosa and stricta, but australis is not among them. We are now wondering where Jamie Durie thinks Dicksonia antarctica hails from. It is the Tasmanian tree fern which is a close relation of our own ponga trees.

But at least Jamie avoids the dreary political correctness of a pretentious novel I was recently reading for review. Describing the Christchurch gardens of the relatively well-heeled, the author wrote: “Most of the gardens were populated with imported English varieties, but there were a couple of house owners who had made some effort with native New Zealand vegetation, and the dark greens and rich browns stood out among the bleak, bare branches of the non-native trees that seemed to claw at the grey air.”

I read this passage aloud to Mark who instantly demanded to know what native tree is a rich brown. Shades of green, dear, they are shades of green. I envisaged the PC Christchurch of the future where gardeners could only plant native trees – towering rimus, totara or kahikeatea, perhaps, which on a small town section will remove all winter sun and light from your neighbour’s property. Or maybe some of the smaller trees such as the interesting dracophyllums or nikau palms which, typically, are forest growers, designed to grow in company and with the protection of surrounding plants. Let’s be PC and maroon these forest dwellers in a sea of suburban grass.

Our native dracophyllum, better in company than marooned as a lawn specimen in solitary splendour

While we are about it, shall we eradicate all the imported fruit trees, veg plants and even the ubiquitous grass? We do have native grasses but they are not usually the ones found in lawns, on road verges or pasture. I am not sure that the author had any understanding at all of botany, let alone gardening. I would be guessing that her derisive reference to imported English varieties includes the cherry trees for which Christchurch is renowned (hailing from Japan), the deciduous magnolias (from Asia), dogwoods (cornus – mostly American) let alone the rest of the options from around the world. As you may have gathered, I regarded that particular passage as particularly ill-informed and downright silly.

I will absolutely stand up for the preservation (and preferably extension) of our remaining forest remnants where the eradication of competing imported species is important. I think defending our diversity of indigenous plant material is equally important. I think incorporating native plants into our public plantings is highly desirable and that our native flora has a key role in our domestic and private gardens. It is what makes us different. But I am not going to put our native plants on such a pedestal as to declare that, by definition, native equals good, imported equals bad and reactionary.

We are hardly living and gardening in an environment where our native plants originally thrived. New Zealand attitudes to our indigenous flora have waxed and waned in recent years. The early settlers often found the native forests intimidating which is to be understood when you consider that all our plants here are evergreen whereas the majority of both native and introduced trees in Britain are deciduous. The forest remnants I have seen there are what I would call woodland. Our bush is akin to impenetrable, tropical forest without the tropical temperatures. I imagine they were terrifying to people more accustomed to woods of white barked birches, sweet chestnut or oaks carpeted below with wild bluebells and snowdrops. No wonder they planted to remind themselves of home.

Even thirty years ago, there was a pretty large-scale dismissal of our native flora as dull, boring and not worthy of garden space. Native plants on sale were under-valued, so sold cheaply and seen as utility – a bit like riparian plantings today. All function and no aesthetics. Then came the big turnaround and suddenly native plants were all the rage. Led by government agencies, public plantings were heavily dominated by native plants. This crossed over to private gardens and planting native became the higher moral ground, a point of principle. A stream of Bright Young Things could be found browsing plant stocks, determined to buy and plant only natives. Though they would make an exception for an apple tree (from Central Asia), a macadamia (from Australia) or an olive tree from Greece. There was also a myth that you had to plant natives to feed our birds. In fact you have to plant the right plants to encourage birds and our indigenous birds are not fussy about whether it is a native or an introduced plant.

The author of whom I am so critical is caught in this PC time warp. As always, the answer lies in the middle ground. We have many fantastic native plants ideal for gardens. We also have boring, utility native plants ideal for land reclamation, shelter or nurse plants. But it doesn’t have to be all or nothing at a gardening level. It is the vast array of plant material that we can grow here, the mix of indigenous and introduced, which makes our gardens interesting. Those Christchurch houses so maligned for their plantings are probably much better served by deciduous specimen trees which allow light and winter sun through. We tend to have cold houses in this country and we don’t need to make them any colder by planting so that they are in the winter shadow of evergreens. Bare branches silhouetted against a winter sky can be seen as a beautiful tracery just as readily as the aforementioned bleak, bare claws. Long may common sense and aesthetics triumph over ignorance, however well intentioned and at least those Christchurch houses planted trees rather than keeping everything to under a metre in height.

Flowering this week: Vireya rhododendron saxifragoides

Eight years of growth, maybe more, in good nursery conditions and R.saxifragoides reaches this size

Eight years of growth, maybe more, in good nursery conditions and R.saxifragoides reaches this size

We have a standing joke here about plants which we won’t part with unless the recipient passes both an interview and a test – saxifragoides is one of those plants. After a good eight years, maybe more, this plant is 6cm high and about 14cm across. We don’t want to waste a plant that grows so slowly on somebody who has no idea what it is or too little appreciation of what it takes for the plant to reach this stature. It is an odd little vireya species from New Guinea which makes a mounded cushion (generally a small mounded cushion) and which is far more tolerant of both cold and wet conditions than any other vireya we know. In fact it is often found growing in cold bogs in its native habitat (other rhododendrons will quickly give up the ghost and die if their roots stay wet for long) as well as in alpine grasslands. It is not as forgiving in our garden where I have managed to kill off two or three plants now. It seems easier to keep healthy in a pot.

The flowers are red and held singly (most rhododendrons have clusters or trusses). Sharp-eyed readers may pick the similarity in flower to the rather larger vireya hybrids, Jiminy Cricket, Saxon Glow and Saxon Blush. Yes, saxifragoides is a parent of these and gives the hardier characteristics and the leaf shape to its offspring. In the wild, saxifragoides will layer naturally (put down fresh roots from branches which touch the ground) and seed down. Very old clumps have been found which have even developed a woody rhizome below ground but in cultivation it is normally propagated from cutting – very small cuttings as you can perhaps imagine from the picture.

In the Garden: Friday 9 July, 2010

Our citrus trees actually do save us money

Our citrus trees actually do save us money

  • Avoid stomping around the garden or lawn where you have spring bulbs. It is a hard life already for a bulb, pushing through cold, wet soils without being stomped back into the ground. Even worse, some only put up one flowering spike and if you break that off, you are sunk for this season’s display.
  • Prune and keep pruning. I am halfway through the roses but have finished the wisterias. The hydrangeas have been started. As luculias finish flowering, it is the best time to prune and feed them because their instinct is to spring into growth. It doesn’t pay to be too brutal with luculias – they can up and die on you. Regular pinching out or cautious renovation is recommended. They are not difficult to root from cuttings in late spring or early summer if you want to start afresh.
  • Sasanqua camellias can be pruned and shaped as they finish flowering. This includes sasanqua hedges but it won’t matter if you leave it until spring.
  • With our comparatively mild winters, we can lift and divide dormant perennials such as hostas all winter and spring. In cold climates where there is no growth over winter, recommended practice is to leave it until temperatures start to warm in spring (presumably divisions can rot in completely dormant, cold and wet conditions) – hence the different advice in books and TV gardening programmes from England. However it is wise to leave grasses, reeds, rushes and similar plants until they are growing again because they can be surprisingly touchy.
  • You can at least be planting your fruit trees which are now available in abundance. Put in the sure-fire crops first and go to the riskier, more exotic options if you have space remaining. Apples, pears, plums and feijoas are extremely reliable whereas it can be hit and mostly miss with peaches, nectarines, cherries and apricots. In mild coastal areas, citrus and avocados are well worth a try – for us they are the crops that save us significant money. Only buy named cultivars of feijoas – the cheapie plants are patchy seedlings for hedging and may never even fruit.
  • Get a winter strength copper spray onto deciduous fruit trees, citrus and roses as a winter clean up. This will reduce disease and lichen.
  • I have a new definition of a gardening optimist – the person who googled “sub tropical fruits Southland”. Southland may be many things, but sub tropical is not one of them.