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Over the years, Gerry has answered more than 5,000 of your gardening questions. His knowledge is based in science and practical experience, and by working on radio and television.
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I have just removed 20 Golden Apeldoorn Tulip Bulbs, which I planted last October, from a large pot to make room for summer bedding. I have read that it is not worth keeping Tulip Bulbs for later planting as they often don't flower again or do so very erratically. Whats your view on reusing Tulip Bulbs. Should I throw them away and get new ones in the Autumn?
I have a clear gel like substance on the stalks of my rhubarb. Can you suggest what this might be?
Is it too late for me to plant Dahlia tubers in pots? Those I planted directly in the ground have been destroyed by slugs/snails. I thought I might grow new tubers in pots and plant them out when they are mature. Don.
I'm trying to grow organic and to that end I'm looking to make my own insecticide. Quiet a few of the formulas I have come across on line specify either insecticidal soap or dishwashing fluid as part of the formulation. Can you recommend an organic version and supplier of either of these.
If I pinch out the main shoots of my Dahlia plants at 3 sets of leaves (18-20") to promote bushier growth, by how much roughly would this reduce the eventual height. I have a few tall varieties (40-48") but my site can get windy conditions at times. I have shorter cvrs but I would like to keep these tall ones. I have staked them but this looks ugly.
The leaves on my Iris reticulata are extremely long, to the extent that they actually take from the display, its like looking at the flower through the bars of a cage. Can you tell me what may have caused this please?
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