Tikorangi Diary Thursday 13 October, 2011

Mark's meconopsis available again

Mark's meconopsis available again

As we hurtle into spring, the pressure is on to get the garden all groomed up and ready for our annual garden festival at the end of the month. This means we are around most of the time so plant sales are not restricted to just Fridays and Saturdays. If you come in and can’t find anyone, please sound your car horn. We have Eftpos available (but not credit cards).

Half price on most magnolias (while stocks last). This includes Vulcan, Burgundy Star and Black Tulip but not Felix Jury (which is in short supply). It is nearing the end of the season – the plants would be happier in your garden than in our nursery. There are about a dozen Magnolia grandiflora “Little Gem” left at the bargain basement price of $12 (but the Camellia Jury’s Yellow have gone). Magnolias are listed under Plant Sales on our website but not with sale prices – halve them. This offer includes good plants of Fairy Magnolia Blush – if you have been planning a hedge of them, now is your chance to do it at a very reasonable price.

The very curious Arisaema sikkokianum

The very curious Arisaema sikkokianum

In the treasures line, we have some of Mark’s meconopis for sale – blue Himalayan poppies. These plants are already in their second year and show more perennial tendencies than usual in our climate (though not guaranteed perennial – it would pay to gather the seed this year as well). And we have good plants of Arisaema speciosum (great for woodland carpets) and the curious, showy but more difficult Arisaema sikkokianum.

No mail order, sorry. Personal customers only.

Tikorangi Notes: Tuesday 11 October, 2011

Notable, perhaps, for a total absence of any PC thinking here!

Notable, perhaps, for a total absence of any PC thinking here!

Tikorangi Notes: Tuesday 11 October, 2011

I am a little late with the links to latest posts this week. They were available on Friday as usual but I was in Hamilton speaking at the Waikato Home and Garden Show – where I found a wonderful example of absolute lack of any hint of political correctness. Golliwog scarecrows – gollycrows, perhaps. I am guessing that the creator had simply no concept whatever of the debate two decades ago about Little Black Sambo, the Black and White Minstrels and golliwogs which forever labelled these as monuments to racial stereotyping.

Latest posts:

1) Cyrtanthus falcatus – a first flowering for us of this interesting large bulb and member of the amaryllis family. We must have waited well over a decade for this event.
2) Kicking off the debate here on the difference between maintenance and sustainability in the garden – Abbie’s column.
3) Grow it Yourself looks at potatoes this week.

Rhododenrons Floral Sun and Rubicon

Rhododenrons Floral Sun and Rubicon

Tikorangi Notes: Tuesday 11 October, 2011

Arisaema sikkokianum

Arisaema sikkokianum

As the magnolias pass over, it is the time for rhododendrons and the mid season bulbs to come into their own. While the soft golden tones of Rhododendron Floral Sun and the pure red of Rubicon side by side may lack subtlety, they present an eye catching combination in our carpark. Rhododendrons often have a relatively short time in full bloom but the anticipation of fat buds showing colour and starting to open extends the flowering season substantially. It is also arisaema time for us. A. sikkokianum is not the easiest variety to keep going as a garden subject and it needs to be increased by seed as a rule, but it is one of showiest species in flower with its pure white spadix and its bloom held above the foliage. A. speciosum is not as showy but is trouble-free to grow and settles in most comfortably for the long haul. It has very curious burgundy snake’s head flowers held just below the tall, open foliage.

With our annual garden festival now just two and a half weeks away, the pressure is on the groom the garden to pristine standard for the 10 days which is our peak time for garden visitors. Formerly referred to Rhodo Festival, this year its full name is the Powerco Taranaki Garden Spectacular (!). More details at www. gardenfestnz.co.nz.

Cyrtanthus falcatus

Cyrtanthus falcatus - more a curiosity than a beauty

Cyrtanthus falcatus - more a curiosity than a beauty

We are rather delighted with our Cyrtanthus falcatus this week. It is not that it is a flower of great beauty in its own right, more that it is a plant of great curiosity and a bit of triumph to grow in the garden.

The cyrtanthus family come from South Africa. By far the most common form is the one widely known as the red vallota (Vallota speciosa, often called the Scarborough lily though it is a member of the amaryllis family and not a lily at all). We also use the dainty but sweetly scented evergreen Cyrtanthus mackenii in the rockery. It will not stop you in your tracks. But C. falcatus will attract anybody who is interested in plants.

We first saw it flowering in the UK in a glasshouse at Wisley back in the mid nineties and have never seen it flower in this country. That is not to say that it hasn’t ever flowered here, just that we haven’t seen or heard of it flowering. Auckland plantsman, Terry Hatch, listed it many years ago and Mark bought several bulbs. Only one survived. He had been trying to grow them in containers but in desperation planted the last remaining specimen into the garden where it has thrived and multiplied. The original bulb is now about the size of a belladonna bulb, so large, and has at least three visible offsets. But this is its first flowering. We have only waited well over a decade, maybe even fifteen years for this event. The mottled stem is about 30cm, strong and curved at the top like an upside down umbrella handle so the reddish pendant flowers face downwards. Who knows, given another decade or two, we may have a whole drift of them and they will undoubtedly be more spectacular when there is more than one. Good things take time.

Garden maintenance, sustainability or just garden grooming?

Judge not a garden upon the daisies in its lawn

Judge not a garden upon the daisies in its lawn

There is nothing like preparing a presentation to focus the thinking. So most of our discussions here recently have been clarifying thoughts on what makes a good garden. The ever-so-brief outline is that good gardening is a combination of good design, good plants and plantsmanship over time, maintenance and sustainability all served up with more than a dash of panache, style or flair. If you want the full details along with all the accompanying examples, you will just have to come to the Waikato Home and Garden Show today at 12.30 or tomorrow at 2.30 (find the Weekend Gardener Stage).

Because we garden on a large scale here and The Significant Other had a deeply disturbing Significant Milestone Birthday recently (“It is all downhill from here,” he keeps reminding me), sustainability is a gardening principle we are spending a lot of time thinking about. But it wasn’t until I was working through my presentation that I came up with the hypothesis:
“We spend far too much time worrying about garden maintenance in this country and not enough time worrying about sustainability. In fact, so-called maintenance is in danger of being accorded a status way beyond its importance. What compounds this is that what is frequently seen as garden maintenance is in fact garden grooming – edges, hedges and lawns.”

Garden grooming is what presents a garden well and it is just as important as housekeeping indoors. But while the initial design and fit out of a house is a highly skilled exercise, often employing the services of an architect and an interior designer, the routine cleaning is a low skilled task at best and can be carried out perfectly adequately by someone with little thought and no understanding of the skill level that went into creating the interior. So too in the garden. When we still employed staff in the nursery, we would despatch them into the garden with leaf rakes and edging tools when we had to spruce up in a hurry. Generally they weren’t gardeners and they needed clear boundaries set lest they do real damage, but they were fantastic garden groomers. They could whip through and titivate in next to no time, partly because they didn’t get distracted by plants. At the end of it, the garden looked fantastic. It was a bit of a revelation to us that if the underpinning garden is in good shape, it doesn’t take particular skill to add the icing to the cake. Yet it is that sharp finish that is often judged as garden maintenance.

People who open their garden to the public will know all about this final grooming round and just how smart it makes the garden look. Most garden visitors now expect that high level of finish, especially for festivals and events. It is a great deal easier to manage if your patch is a small town garden and I have seen some splendid examples of immaculate presentation. Alas, as many have come to consider that this elevated level of garden grooming is the measure by which a good garden is judged, large gardens encompassing several acres have come under pressure to achieve the same, immaculate, sharp appearance. We do it here once a year for our annual garden festival and I love how smart the garden looks and vow every year to maintain it at that level. But it is completely unsustainable across seven acres. Without an army of gardeners (about one to an acre, perhaps), it just is not possible to keep it that spic and span for 52 weeks of the year. Besides, battling nature takes all the fun out of gardening.

Immaculate garden grooming is not the same as maintenance (photo: Jane Dove Juneau)

Immaculate garden grooming is not the same as maintenance (photo: Jane Dove Juneau)

I call that finish garden grooming. Garden maintenance should be considerably more extensive and require much greater skills. It is, or should be, all about managing your garden in sustainable ways so that it is a source of pleasure and not a burden. It is about keeping control of weeds so they never get beyond you, about keeping plants and soils healthy and about eliminating gardening practices which are all round bad for the environment. It is about adapting to changing environments within the garden over time. As trees and shrubs grow, they start to cast shade and their roots spread further. The gardener needs to change some plantings and practices as the growing environment changes. Maintenance is about keeping trees a good shape, avoiding forked trunks, lifting and limbing, and about knowing how and when to prune. It is about lifting and dividing choked perennials, deciding which plants are precious and which are expendable, restricting or eliminating plant thugs, rescuing bulbs which have become so overcrowded they no longer flower.

That is what garden maintenance should be about. To me, it is not about whether there is the odd flat weed in the lawn. Goodness knows, we have a park full of pretty white daisies though we do try and keep flat weeds out of the house lawns. At least our lawn clippings are not toxic and can safely be put on the compost heap or indeed used in the vegetable garden except that we never gather the clippings. We mulch them back in and that means we never have to add fertiliser to the lawn.

I appreciate the immaculate presentation of a garden but only when it is the final touch to one which is actively and positively gardened, not when it substitutes for an underlying lack of quality management. Look beyond edges, hedges and lawns.

Grow It Yourself: Potatoes

The history of the potato is a remarkable one and surely warrants further exploration at a later date. But is it worth growing at home? If one potato is much the same as the next to you, then probably not, because they are so cheap to buy. But if you love your taties and can tell the difference between varieties, then of course you will be growing them. And the message from the Head Vegetable Grower here is that if you want new potatoes for Christmas dinner, you will have to get them in this very weekend because most early varieties take from 75 to 90 days to mature, though Swift and Rocket can do it in 60 days. Potatoes are vulnerable to disease so it pays to start with fresh certified seed potato from garden centres each year rather than using your own old potatoes which are shooting.

Potatoes are heavy on space. Because this is not a problem for us, we do them in rows digging narrow trenches about 20m deep and wide (full sun, well cultivated friable soil, fresh ground if possible), piling the soil to the side of the trench. The potatoes are then laid on the bottom of the trench and covered with 10cm of compost. As the shoots reach about 20cm, more soil is layered on top – a process called mounding. The potatoes form on the stems so you need to encourage stem growth and keep a thick enough layer of dirt to keep the potatoes well covered and stop them going green. The mounding process continues until the plants have flowered and it may be necessary to water in dry spells because the mounds lose moisture.

In smaller spaces, the stack of tyres is a popular technique, though hardly aesthetic. Potatoes need good drainage so it is better to build your stack on dirt rather than concrete. Start with one tyre and fill with good soil or compost, making sure you fill the rims as well. Plant about three potatoes and, as mounding is needed, add another tyre and fill with soil. You will probably end up with a stack of 3 or 4. If you plan to use potting mix instead of soil, they will become expensive potatoes.

One of the reasons for getting potatoes in now is to try and get crops through before the dreaded blights hit. In our experience, if you are not willing to spray your potatoes regularly with copper (about every fortnight), unless you know what you are doing, get your crop in early and manage them very well, you will get disease. Don’t use nitrogen based fertilisers as they are a root crop. Favourite early varieties here are Liseta and Jersey Benne, for main crop Red Rascal and Agria.