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; for the first time I've been able to run an extension to my greenhouse to power an electric propagator. When temperatures all around have fallen, the propagator maintains a warming 20Ë?C, perfect for germinating most seeds.I always grow an assortment of chillies

Should I feel guilty about heating my greenhouse? While I'm turning the heat down in my home to save energy, keep bills down, and reduce CO2 emissions, here I am considering heating my greenhouse to both protect plants through winter and provide

the long wispy side shoots back to about 20cm during summer (July is perfect), and then cutting these stems back further to about 5cm during winter. Pruning twice a year in this way not only controls the mass of new growth that develops each year, but also

for sowing next year's coriander crop. Allow the seeds to ripen fully on the plant before harvesting.In the greenhouse I save seed from chillies, tomatoes and sweet peppers. The rule of thumb here is not to save seed from F1 hybrid varieties, as their progeny

of salad leaves possible; lettuce, spinach, pak choi, mizuna, beetroot, watercress, parsley and chives, as well as tomatoes, beans, courgettes and new potatoes. Although I've tried growing them, I haven't had much success with either sweet potatoes or soya

, although she is quite partial to tomatoes if they drop onto the greenhouse floor. We can't put bread out for the birds any more, as Magic sees this as her food. Now all she can do is wait for birds to carry the odd piece of bread from next door and drop

' that form part of my garden every year, such as coriander, salad leaves, dwarf sunflowers and 'Gardeners' Delight' tomatoes. I can't cut back on any of these, but then there are new varieties to try, as they all look so much better than my tried and tested

There are days nominated to celebrate apples, festivals for tomatoes and chillies, and whole weeks to inform us about bird nesting boxes, trees, allotments and composting ... and this week it's the turn of the conifer.The Association of British

in the packet. A balanced approach is probably best. Order seeds of those favourites that you know perform well and you won't be disappointed. I'll always try one or two new tomato varieties, but will always grow 'Gardeners' Delight'. Few, if any, can beat

on Friday 18 June 2010 at 3pm, repeated on Sunday 20 June at 2.00, so do tune in.And, of course, Gardeners' World is being filmed at the show for broadcast on Friday evening on BBC Two.We're looking for this year's Star Plant at the show, but can't do