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Growing tomatoes with ring-culture pots involves surrounding the crop with a bottomless ring and adding layers of compost at 10-14 day intervals. This encourages the tomato to root from the stem so it can take up more water and nutrients than it would get from the growing bag alone. The result is vigorous, productive plants, and compost that remains moist helps reduce fruit splitting. Ready-made ring culture pots cost about £10 for three, but they can easily be made from 20cm pots.
If making your own growing ring, start by cutting the bottom from a 20cm-diameter plastic pot using secateurs. If not, simply cut a hole in your growing bag and place the growing ring over it.
Plant the tomato in the compost, stake, firm and water well as you would normally. Then, add a 2-3cm layer of compost to the pot every 10-14 days, until it's full. Try to water the plant daily and give it a liquid feed every week.
Remove sideshoots from plants as you would normally. When fruits start to develop, remove leaves which would otherwise shade them, so they ripen fully.
28/02/2013 at 23:10
If you FEED a tomato plant BEFORE the tomatoes are set you will get a big plant with big leaves and little or no fruit.
01/03/2013 at 08:26
This is NOT the correct ring culture . The correct equipment is a bottomless pot with a 'moat' around it. Liquid feed is applied to the pot and the moat filled at the appropriate time - when the first truss has set - and normal watering is OUTSIDE the moat. Tomatoes have two root systems and this applies water and feed to the right places. I have been using this system with spectacular results for over five years.