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one year’s seeds seven year’s weeds

One year's seeds seven year's weeds

Putting in potatoes is a good idea. Planting and cropping offer opportunities to turn the soil and most annual weeds will be smothered by the vigorous potato foliage. The reward for all your effort will be in the eating.

To clear the ground you have several options. I am all for the organic approach if you have time. Forking over the soil to get the bulk of the roots out is worthwhile but every little piece left behind will be a potential cutting, so the process may need to be repeated several times and left for a month to six weeks in the growing season to make sure there is no regrowth.

Opaque mulches are another alternative which can be very successful. A layer of black plastic or several layers of cardboard laid over the ground will kill most perennial weeds in a growing season. Some weeds, however, are more persistent than others – in one garden I was astonished to find bindweed writhing around after a full year of mulch. This was the same plant that went 7ft deep in the clay bank we excavated. That would require some digging out, so we resorted to Glyphosate. The safest of all the systemic weed killers, this is rendered inert when it comes into contact with the soil and works best when applied to foliage that is in full growth.

You could argue that a weed is only a plant in the wrong place. In New Zealand, lupin, gorse, cobaea and ginger, all of which are colonising native habitats, are treated as weeds by local gardeners, while in Britain we have a growing list of notifiable weeds that were originally introduced as garden ornamentals. Heracleum mentagazzianum, the giant hemlock, is using waterways to float its boat-shaped seed to pastures new. Japanese Knotweed is pushing up tarmac and buddleia, once introduced as an exotic ornamental, is now part of our industrial landscape. Indeed, it loves the urban jungle so much that it turned the bombsites purple after the Blitz.

Who wants to spend hours bent double doing a job that will only need to be repeated in a matter of weeks? Well me, for one. Thanks to my strict Wisley training I find it difficult to concentrate on the greater picture when I know that there’s weeding to be done.

My definition of a weed is a plant that does not fit in with the chosen scheme because – given a chance – it will overwhelm everything else. Brambles were not welcome in my London garden because there was simply not enough room for them and they took two years to clear, but in a country setting I would not want to be without a patch to pick in the autumn. Now that the garden is cultivated, the enthusiastic self-seeder Verbena bonariensis is potentially the greatest problem I have.

So a weed is a plant that competes for food, water and light, and will check the growth of anything more demure. Even a young tree will be at risk until it has established a large enough root system to supply it with sufficient water and nutrients. Keep a yard diameter clear at the base for the first three years and it will literally put on twice the growth of a plant left to fend for itself.

There is also the question of balance. The yarrow took over a newly established meadow that I sowed in a garden on the South Downs. It loved the thin alkaline soil and outgrew its companions in the first two years. The client was all for digging it out – hours of backbreaking work – but he was persuaded to leave well alone and, in year three, the slower-to-establish perennials and wild grasses caught up and crowded the yarrow out.

The great secret is to start with ground that is free of all perennial weeds. Couch, equisetum, ground elder, dock, bindweed and creeping thistle are just a few of the worst offenders and I would prefer to see ground left bare for a year to rid it of any of these than to plant a pending disaster.

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On the danger of allowing weeds to grow and seed themselves: also used figuratively. □ 1866 Rural American 1 Dec. .

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One year's seeds seven year's weeds

Why would you get seven years of weeds from one year of seeds? One reason is that it’s a form of plant birth control.

If you like a flower, for example, but it self-seeds too abundantly, a solution is simple: don’t let it go to seed.

I can’t do anything about deadheading trees, and don’t have room to create a nice hot compost pile. Plus, my yearly mulch of uncomposted maple leaves will always contain seeds.