January 16, 2009 In the Garden

  • Prune cherry trees now. These have to be pruned in full summer to avoid disease. You can carry out most tree surgery and shaping now (with the bonus of getting the winter firewood done at the same time and in good time to dry out for winter) but this is not the time for clipping foliage. As a general rule, trees are best kept to a central leader. Forks in tree trunks are structurally weak in the long term and can cause the tree to fall apart and it is a great deal easier to shape a tree when it is very young. General opinion now is that branches and limbs should be cut back fairly flush (but not dead flush) to the trunk and it certainly looks a great deal better not to have nasty truncated branch stumps sticking out. You can use pruning paste or paint the stumps if you feel you must. We don’t. However, if it is more than a secateur sized cut on a cherry tree, Mark follows up with a sharp pocket knife to clean the wound and pare back the bark a little to reduce the chances of infection. Cherries are especially vulnerable.
  • If you are planning on doing anything to autumn flowering bulbs such as nerines, cyclamen and colchicums, get onto it as soon as possible because they are moving into growth. We have the first cyclamen hederafolium flowers showing already.
  • If you want carrots and parsnips, you need to get the seed in as soon as possible. Parsnip seed has to be fresh to germinate so you need to buy it or save seed every year. The trick to sowing seeds in mid summer is managing to keep the bed moist so they don’t fry, without washing out the seed. Avoiding drying out can be helped by covering the row with a board or a narrow strip of nova roof or similar.
  • It is down to the last two weeks for sowing late crops of corn to take you into early winter with fresh cobs. Green beans are another good staple which you can continue sowing now. Keep up with sowing salad veg for continued supply. You can still sow main crop potatoes and they will sit in the ground waiting for you to dig them in winter.
  • Final call for planting out brussel sprouts if they are to have any hope of getting to a good size before winter. We grew Maxim last year with good results. Brassica seeds (crops including broccoli, cauli and cabbage) can be started from seed now for early winter harvest.

If you are now eating the potatoes you planted in spring, you may like William Cobbett’s quote from 1838:

As a mere vegetable or sauce, as the country people call it, the potato does very well to qualify the effect of fat meat, or to assist in the swallowing of quantities of butter.

Survival Instincts

There is something charming and reassuring about our elder daughter coming home from Australia for a few days and deciding to repot the orchids. Working alongside me at the potting bench, she marvelled that the last time the orchids had been repotted was when she did them in 1995. They have been fed and watered regularly in the intervening years and there was an element of survival of the fittest, but it is a remarkable genus that can gently tick along while in the same sized pot and in potting mix that is coming up to fourteen years old.

When said daughter was about twelve, she developed an interest in orchids. She is inclined these days to smile wryly and observe that she always was a bit of a geek. Naturally her father was absolutely delighted and encouraged her interest with a joint membership to the Orchid Society. They would trot off together to monthly meetings where Mark used to joke that he was half the age of most of the members and she took the average age down further by several notches. But to this day, they both remember how very encouraging and generous the members were to them both, but especially to our young J.J. Over the years, Mark has been a member of various horticultural interest groups and he has always been impressed by the depth of knowledge shown by pretty well all the orchid enthusiasts – a far greater technical knowledge than is the norm in most special interest horticultural groups. And in terms of complex plant genus, orchids take the top position for having the most individual and diverse species of any plant.

Passionate plantspeople tend to be either collectors or gardeners. Mark is first and foremost a gardener. His motivation is to find the widest and most interesting range of plants he can grow in our garden here. But for some others, collecting a plant and finding out about it is more fun than actually growing it in the garden. So learning about orchids for Mark was primarily aimed at discovering which varieties are suitable for naturalising in our conditions here.

Our J.J is more of a collector and in that she has more in common with most orchid aficionados who tend to be collectors and enjoy the whole showing and sharing process more than practical application to gardening. It is probably that whole process of showing and sharing which means that the Orchid Society still exists in New Plymouth and with sufficient support to mount regular displays at a time when many other similar groups are folding in the face of declining membership. They have clearly remained as generous with their time, expertise and passion for the genus as they were 15 years ago and they have their annual summer show on this Saturday and Sunday at Highlands Intermediate. It is apparently the only summer show in the country and attracts exhibitors from outside the region. You can be assured of seeing orchids in flower which you may never have seen before, including displays of disas. Orchids being such a complex plant group, if you are keen to learn more, it is certainly easier to make contact with the local enthusiasts than to try and muddle along alone.

For the record (and I am sure I have written this before), the successful garden orchids we have here in mild conditions include cymbidiums (the classic orchid used in floral work and with a very long flower life), Australian dendrobiums, pleiones (sometimes called the teacup orchid), calanthes and dactylorhiza. And yes we do have native orchids in this country too, though the pterostylus are so modest and understated that only those in the know would pick them as belonging to the orchid family.

On another topic, along with much of the rest of the developed world, we have been gently drifting back into a more home-grown self sufficient lifestyle (easier with only two of us left at home) but we hit a new watershed on Saturday when we sat down to a dinner when I bravely served up rabbit with home grown vegetables. I know many people around the world eat rabbit. Our J.J. used to travel regularly with an Australian bus driver who would follow up all the rabbits advertised in the Pets column and take them home for the larder…. But I have always had my reservations though I can still hear the inimitable Kim Hill’s words ringing in my ears: “Take their little blue jackets off before you cook them.” We have been inundated with rabbits here, despite the cat doing her best. I have seen her eat Flopsy as a pre-breakfast snack, tuck into her serving of Mother Rabbit for breakfast, return with Mopsy for morning tea and then eat Cottontail for lunch. Mark is also shooting them in quantity and has been suggesting we should be eating the best of them.

At last I found a recipe (in a review book on Italian cooking) which clearly disguised the origin of the meat. It did involve Mark in some extensive micro surgery to bone out the carcase and I then rolled it with a pistachio, mushroom, lemon and thyme stuffing and wrapped it in bacon. It was delicious and the resulting meal served with potatoes, green beans and roasted Florence fennel owed a debt to the supermarket only for some of the stuffing ingredients and the bacon. I need to ease my way into rabbit gently as a regular addition but it could have been mistaken for chicken or pork.

Mark is now suggesting that we should be learning more about edible mushrooms. We have been so ingrained with the mantra that only the field mushrooms are safe to eat in this country, that we ignore a range of fungi which grow freely here and are valued in other parts of the world. Good identification is required because we also have fungi which are hallucinogenic and so toxic they can be fatal, but making the move to eating puffballs and pig’s ear fungi is a mind shift like the rabbit.

We are rediscovering the hunter-gatherer instincts. It is undoubtedly much easier in rural Tikorangi than in Central London where Second Daughter was much amused to see the local technical institute in Maida Vale offering a course in hunter gathering. Beyond squirrels and the occasional fox, we weren’t sure what there was to hunt in Central London and the gathering opportunities seem extremely limited in an environment where even the common sparrow is dying out for lack of food. But it is certainly quaint that in one of the world’s most urban environments, the hunter-gatherer instincts live on.

In the Garden January 9, 2009

  • Many succulents and cacti are easy to multiply. Cacti need a very free draining mix which is not rich in nutrients or humus. Succulents can be grown from snapped off stems. Make a clean cut and leave them to dry for a day or two, then replant, staking if needed to keep them upright. It does not take long for them to put on new roots. If everybody knew how easy it is to put roots on aeonium Schwarzkopf (the black-maroon plant of rosettes which is still very popular and greatly overpriced as a result), the market for it would die quickly. Crassulas (jade plants) can be increased in the same way. Just keep these types of plants on the drier side because if you water them too much, they will rot instead of rooting.
  • If your wooden outdoor furniture is looking greyed and as if it will soon produce splinters, a deep conditioning treatment helps to protect the wood and make it last longer. You can buy products at hardware stores but we still use a mix of good old fashioned linseed oil and turps. The mix is not exact – usually about 60:40. The turps helps thin the oil for easier application and absorption. It does darken the wood and if you want to keep it closer to the original ginger colour of new outdoor furniture, you are better to pay the extra for the considerably more expensive proprietary products. But if your furniture is already weathered grey and dry, it does not make a lot of difference. If you have algae or lichen growing on the furniture, kill it with diluted household bleach before treating the timber.
  • Deadheading renga renga lilies makes them look better and confines their spread.
  • The noxious weed undergoing eradication on our coastlines and referred to only by its common name of Chilean rhubarb on the front page of Wednesday’s paper is Gunnera tinctoria. While it is highly prized in the UK as a spectacular ornamental which they go to considerable lengths to protect through winter, it is a menace and an extremely large thug here and gardeners should be acting responsibly and eradicating it entirely, no matter how much they like it.
  • Waitara is at its very best at this time with pohutakawa numbering into their hundreds flowering. It is worth a drive to admire the display. Once you have your eye in, you can see big differences in colour. Some are rather brown while the stand out trees are more to the orange or coral red colours. The yellows are not as showy. Some of us may even call them insipid. If you plan to grow some from seed, identify a good coloured form with a mass display of blooms. Seed is ready to gather around May.
  • It is the last chance to get deciduous cuttings such as viburnums or roses in. Hydrangeas and grape vines also root easily for the home gardener from summer cuttings.

In 1870, Frank J.Scott wrote (a little pompously, perhaps) in The Art of Beautifying Suburban Home Grounds:

It is unchristian to hedge from the sight of others the beauties of nature which it has been our good fortune to create or secure.

We are guessing that he did not live in a windy area and he had good neighbours!

Sustainability – the buzz word for 2009

In between the excesses of food and alcohol which mark the current festive season for many of us, New Year is traditionally a time for reflection and resolutions to do better in the coming year (or weeks, sometimes only days!). So too, have we been reflecting on directions in gardening. It feels like such a short space of time since I used to write deploring the horrors of the pretentious minimalist garden and the clonal aspects of many gardens which used an identical palette of plants and a very narrow palette at that. The minimalist garden is just so passé now that it is consigned in history to the same category as the 1970s conifer garden planted under a mulch of black plastic and either pebbles or scoria. Fad gardening.

But the rise and the rise and the continuing rise in popularity of the vegetable garden and growing fruit trees at home has taken pretty well every professional in the garden and horticulture scene by surprise. Who isn’t growing at least a few lettuces, herbs and mini toms at home these days? Those who have been doing this all their lives will not be surprised at all but are possibly basking in the wholesome glow of virtue. Novices will be discovering that it takes hard work and time to be anywhere near self sufficient and there is no guarantee that it will save you money until you are a great deal more competent and experienced, but the beauty of veg gardening is that there are repeated minor triumphs to encourage you along the way. Intermittent or random reinforcement, it is known as in psychological jargon – the most powerful form of behavioural reward there is.

It is likely that the global economic crisis and the global panic which has yet to hit New Zealand as hard as the UK and USA but which is waiting like the wolf at the door will serve to encourage this desire to be a little less dependent on the supermarket and fruiterer this year at least. And when I think about the books I have received to review in the past couple of years, publishers must have been picking this growing interest in thinking local, eating according to the seasons and producing one’s own food. Both gardening and cookery books have been dominated by these themes in recent times. Yes this is fashion, but not fickle fad of the trite nature of minimalist gardens. And it is very positive garden fashion.

The other underpinning theme that is starting to come through gardening internationally is sustainability. That will, I predict, become the buzz word that will replace organics. Historically, the home vegetable garden and orchard has been practiced reasonably sustainably through the centuries from when our forbears made permanent settlements and moved away from the early slash, burn, crop and move on to fresh ground regime. But ornamental gardening has by no means been a champion of sustainability. In fact it has roots firmly in wealth, power and status and good environmental practice did not even feature on the radar. It still doesn’t, in many cases, but the tide is turning.

The worst excesses of the use of chemicals in the garden have been curtailed to a large degree by government regulation and a jolly good thing too. It is not that long ago that Paraquat used to be seen as a super quick acting alternative weed control to glyphosate. In terms of a heavy duty chemical which was extremely dangerous to humans and all round bad for the environment, Paraquat ranks right up there. And it was only one of many that the toxic generations of gardeners from the 1950s to the 1990s saw as progress but which are now widely deemed unacceptable.

For some time now, I have been advocating a reduction in the application of chemicals in routine garden management, and moving away altogether where possible and I am certainly not a lone voice. I am just reflecting a growing body of opinion which is saying that we gardeners need to be more responsible in how we manage our garden environment and to question some of the very dodgy practices embraced in the past and which some gardeners still follow. The perfect swathe of lawn (in my experience invariably achieved by environmentally bad practice using frequent applications of some pretty heavy duty sprays and chemical fertilisers) may come to be seen as dodgy in the extreme sooner rather than later. As embarrassing as an SUV, in some quarters at least. We have already seen the move away from the mono culture of the rose garden where perfection is achieved by fortnightly spraying. In nature, it is rare to find a mono culture (where only one plant variety grows) and in gardening, mono culture or mass plantings of single varieties is not sustainable either.

Mark is reading The Omnivore’s Dilemma which is both illuminating and somewhat scary, causing him to rethink some long held opinions. No longer can we assume that organics = good for the environment and the planet = more healthy and sustainable. The growth of industrial organics (mass production of food which meets organic regulations to satisfy consumer demand – even frozen organic TV dinners, for goodness sake) can leave a carbon footprint larger than conventional food production, requiring even higher usage of fossil fuels in production. There is a charming and naive association that goes on in most people’s heads whereby organic food evokes images of local, small scale and seasonal production which respects the environment , all typified by the farmers’ markets. This may still be largely true in New Zealand but it is certainly not true in the increase of organic food production overseas which is managed just as cynically as conventional large scale production of anything else. So too with anything labelled natural, which we have been conditioned to accept as superior to unnatural or synthetic and therefore all good for us and for the environment. If you pause to think about it, there are many naturally occurring substances which are not at all good for us or for our planet so all we have done is buy into a marketing term.

I suspect we are seeing a devaluing of the term organic. Watch instead for the term sustainable which embraces most that is good about the organic movement but takes it all a step further philosophically. And as 2009 looks destined to bring us both economic and environmental crises on a scale hitherto unseen, the human response to such massive problems will often be to think smaller, to think locally and to take more responsibility for our own patch where we can influence what happens. That is where sustainable practices in gardening and food production start.

In the garden 02/01/2009

Not so much In the Garden This Week as New Year’s resolution time for the garden this year. You may like to resolve all or some of the following:

  1. Keep a garden diary. They are genuinely useful to refer to in the future and the more detailed, the more use they are in avoiding repeating mistakes and in getting timing right.
  2. Stay on top of weeds and prevent them getting large enough to seed. One year’s seeding really can lead to the next seven years of weeding.
  3. Curtail the routine use of chemical sprays and fertilisers and only resort to these when absolutely necessary. Replace plants which you have to spray regularly to keep looking good.
  4. Plant at least one good long term tree or gift same to somebody with more space if it is not practicable for you. Planting many good long term trees is better, but one is a start.
  5. Plant a fruit tree at home for both yourself and future residents.
  6. Compost your own green waste at home. Spare the landfill, save money and enrich your soil with your own compost.
  7. Resolve to lay mulch on your garden this year to nourish the soil and to reduce water loss.
  • If you have yet to try your hand at vegetable gardening and are wondering where to start, now is the time to prepare a patch for sowing winter crops. Make sure you have an area with maximum sunshine all year, good drainage and preferably not too exposed to wind. Start digging. If it is currently in grass, you need to remove the layer of turf completely (you can compost it) or all the grass will just grow again and choke out your little vegetable seedlings. Once it is dug over, push hoe all the first flushes of weed seeds which will germinate rapidly. Don’t rush this first stage of soil preparation. If you have a well cultivated patch to plant in to with at least some of the weed seeds dealt to, your chances of success are much greater and you still have plenty of time to get winter veg in.
  • There is time to sow seed of summer annuals for late summer and autumn colour. You will have more success if you sow the seed in trays and keep watered for planting out in a few weeks time when they have some size. Gaily broadcasting dry seed onto the garden beds is much easier but generally a waste of time.
  • If you have a problem with thrips on rhododendrons (the leaf sucking critters which turn leaves silver), you can get a really good hit rate by spraying now. If you use a systemic insecticide, the plant sucks it in so you do not need saturation coverage. If you use a contact insecticide, you need to get good coverage underneath the leaves where the thrips hide because it will only kill where it touches.

To close, some advice from Anne Raven:

Don’t wear perfume in the garden – unless you want to be pollinated by bees.