â€œI phoned some building supply stores and none had willow trellises. One source said they would be too flimsy to be useful. Can you give me further info?â€
Thelma Dickman, Vancouver
Willow trellises and towers are available locally from West Coast Seeds. Their website is www.westcoastseeds.com.
Both wooden supports are being advertised for lightweight plants such as sweet peas, cucumbers, climbing peas, and beans.
The trellis and tower are not recommended for very heavy weights such as pole beans, tall peas, or extremely dense plantings of climbers.
The heritage beans I was suggesting in my last column are usually around one metre (three feet) long, and Iâ€™ve found them awkward, because if left unsupported, they sprawl over the ground, and the pods rot if rain arrives. Since most are intended as dry beans, they benefit from a short, light support.
I have seen willow wood towers in many gardens over the past few years, always with light ornamentals, and the effect is quite beautiful.
The delicacy and intricacy of willow wood objects is a major reason why this wood is so popular.
But delicate wood does tend to decay faster than heavier wood, especially if itâ€™s exposed to winter rainstorms.
But both the trellis and tower are foldable and very easy to store inside from fall to spring.
â€œHow can I remove clover from my lawn, other than by digging it out? It is in large patches of my lawn and itâ€™s very hard to get the roots?
Clover in lawns helps fertilize grass, because it absorbs nitrogen from the air and stores it in root nodules, where hungry grass roots feed on it.
Some organic gardeners create lawns and paths by sowing soil with white clover seed.
That is because white clover stays green in drought (due to the deep roots you are having problems pulling out). It seldom needs mowing, and the bees that it attracts tend to stay in the yard, pollinating other plants as well.
Any organic substances that might remove it would likely hurt the grass, as well.
Most organic herbicides are based on horticultural vinegar, which can remove clover briefly â€“ before the deep roots re-shoot.
The easiest way to tackle clover is to get the lawn aerated by a machine in spring. That would tear up a lot of cloverâ€™s roots, which can then be raked out.
You could then spread compost (weed-free commercial compost is easily available) over the lawn and re-seed it with grass.
Itâ€™s important to check the grass seed mix, because many include white clover seed.
Since new lawns need about an inch of water a week, try to time the planting for a time when nature should be providing the water.
To shade out the clover, the lawn should be mown to a height of about seven centimetres, and the grass clippings left in place to help nourish the grass.
Mowing twice will break up the clippings faster.