Tikorangi notes: August 6, 2010

Our plant sale starts today. It is of limited duration (from today until Monday 9 August and then again the following Friday and Saturday) but there are good bargains as we try and clear space in the nursery.

Latest posts:
1) August 6, 2010: Illicium simonsii is flowering now with dainty little blooms which resemble unlikely water lilies cast from wax.
2) August 6, 2010: Hints on garden tasks for this week – don’t beat the gun on planting out summer vegetables, a recommendation for white sapotes and what you should not be doing with your wheelie bin.
3) August 6, 2010: Into the fraught territory of lawn renovation – our latest Outdoor Classroom.

Tikorangi Notes
As the galanthus start to pass over, the dwarf narcissi are opening, along with the early magnolias. The cyclamineus types are a favourite here – resembling a floppy eared dog with its head out the car window, perhaps? Twilight, shown here, is one of Felix Jury’s most successful cyclamineus hybrids – not so reflexed in the petals but a pleasing form and colour and it increases at a most satisfying rate. More magnolias open each day but we are still a couple of weeks off having the display entering its most spectacular phase. The fragrance of the earliest flowering michelias (all white at this stage) is already noticeable, hanging in the air. The worst of winter is over and temperatures are on the rise.

Plant Collector: Illicum simonsii

The small, waxy flowers of Illicum simonsii

I would be telling porkies if I said that these lovely soft lemon flowers are spectacular. Understated might be a better descriptor, maybe subtle. They only measure about 2cm across but they are really interesting, looking like miniature waterlilies cast out of wax. If you think they remind you of something else, you may be thinking of star anise which is the seed head of Illicum verum. Don’t be tempted to try the seeds of other illiciums – most are poisonous. Until I looked it up, I had assumed that Illicium anisatum should be the source of star anise –far from it and anisatum too is very toxic. Simonsii is still a relatively rare shrub in cultivation, originating from the Yunnan and Sichuan areas of China. It is evergreen with a lovely glaucous blue tone to its sturdy leaves and grows much more upright than most other illiciums as well as being more tolerant of full sun and relatively dry condtions. If you break a leaf, you will discover immediately how aromatic the foliage is. Whether you like the aroma or not depends a bit on your attitude to wintergreen or Vick’s Vapourub. It smells a little too close to the bizarre raspberry Sarsi drink we once bought in Kuala Lumpur – in itself an unforgettable experience.

Illiciums are a genus all of their own though they have a distant botanical alliance to magnolias but you could never tell that from looking at them.

In the Garden: Friday August 6, 2010

We are harvesting our white sapotes now

  • If you can grow orange trees or avocados, you may like to try the white sapote or casimiroa edulis – an exotic taste of Mexico whose fruit ripens at this time of the year. I would describe it as a cross between vanilla icecream and creamy custard in flavour and texture. It will tolerate light frosts only but you can get a good crop in our coastal areas and it is an attractive plant, tropical in appearance.
  • In case you are wondering after looking at our Outdoor Classroom this week, Mark sowed a rye and fescue grass seed mix for our lawn. He also added microlina – a fine native grass which he tries to encourage, for which he harvests his own seed. There are experts in grass seed mixes around if you wish to seek out good advice. Turf rye appears to be a good option for shady lawns but sandy lawns (which turn brown in summer) remain problematic if you don’t want to use kikuya.
  • Esteemed colleague Glyn Church advised last year that all winter pruning should be finished by the time birds start nesting. Some readers may need to start panicking – it is clear that the birds are gathering nesting materials here and our first clutch of ducklings is imminent. Give grape vines and kiwifruit priority if you have them. Their sap starts to run early.
  • If the tastes of Italy are what you covet, you can get Franchi seeds mailorder from Italian Seeds Pronto – the catalogue is available at http://www.italianseedspronto.co.nz or you can buy seeds off the shelf at Vetro or Fresha. These are large packets of seed with plenty to share and a range of Italianate goodies which go beyond the common tomato, capsicum and lettuce varieties.
  • Keen veg gardeners will be champing at the bit to prepare the ground for planting out (dig in green crops and start cultivating the ground) and sowing seed in trays or pots to keep under cover in order to get an early start in a few weeks time. You don’t gain anything by trying to get summer seed sown or plants out before the soils have had a chance to start warming up and the risk of frost is past. If you really want to try and push the pace, get a cloche or build a cold frame from old windows. However, carrots, onions, parsnip, beetroot, peas and brassicas don’t mind the cold if you want to be out sowing and planting. Get early crop potatoes in now – by the time they come through in three weeks time, you can mound them over to protect them from late frosts.
  • We gave the All Round Bad Idea of the Week Award to the recommendation in a national gardening publication that your wheelie bin makes a great container for growing potatoes (just drill holes in the bottom first, we are advised). Not only do few of us actually own our wheelie bin, as a container for growing potatoes it is miles too deep, will take far too much dirt or potting mix and that doesn’t address how one is supposed to get the harvest out from the bottom later in the season. If you can’t grow them in the ground, try stacks of tyres though why anybody would prefer to fiddle with potatoes in containers eludes us.

Renovating a lawn: step-by-step guide

Sometimes a make-do patch and feed is not sufficient for a lawn and more drastic remedial action is required.

1) Rake out the dead grass and accumulated debris from the existing lawn – referred to as scarifying or dethatching. We have a manually operated tool for this purpose which is easy to use. You can also use a garden rake or there are powered machines which you can hire. Remove the piles to the compost heap.

2) Level out bumps and hollows, bringing in clean topsoil if required. Ideally you want the top soil to be free of weeds. Where possible, rake to a fine tilth but if you are working over an existing lawn, you can only do this in the bare patches. Too much raking and scarifying can remove the existing grasses that you want to keep. Preparation is the key to a good lawn – there are no shortcuts.

3) Grass seed is best bought and sown fresh. The packet will give the recommended application rate. Measure out a sample square metre and weigh out the recommended quantity so you can see the correct quantity. Don’t rely on guesswork. Broadcast the seed by scattering to get a feel for how thickly to spread it. We applied it about half rate because we were over-sowing existing lawn which still had some grass growing.

4) Compress the soil. Traditionally, lawn rollers are used for this process although we used our lawnmower which has wide tyres. Any rolling weight is fine. You are compressing the top layer, not trying to compact the entire lawn.

5) We chose to spread a fine layer of compost about one centimetre thick to hold the grass seed and give it a good start. We raked out all twigs and larger pieces from the compost. This was spread after rolling.

6) The greatest peril is birds – every seed eating bird in the district will be trying to get the grass seed. The worst offenders are sparrows and finches. It is worth the effort to cover the sown areas until it is clear that the grass is germinating and starting to look green. We used a combination of bird netting and old shade cloth and left it on for about three weeks.

Our annual plant sale

STARTING NEXT FRIDAY AUGUST 6, SATURDAY, SUNDAY AND MONDAY AUGUST 9, THEN AGAIN ON FRIDAY AND SATURDAY AUGUST 13 AND 14 ONLY. STRICTLY LIMITED DURATION. I wasn’t going to have a plant sale this year (Mark does his utmost to ignore these matters) but we really would like to clear some of the plants to make way for the planned new gardens. So there are bargains to be had. Click on Plant Sales where I will post further information during this week about plant lines which are included.