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white fly in greenhouse..help please!
gardening archaeologist
Posts: 46
Am relatively new to gardening and today noticed that the sweet williams in my unheated greenhouse are SWARMING with white fly...ugh! I try my best to garden organically, what can be done to get rid of them? thanks
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Posts
Have alook here for ideas. It's an American site but the advice and methods are equally valid here:
http://www.planetnatural.com/pest-problem-solver/houseplant-pests/whitefly-control/
If the sweet williams are the only plants in there, personally I would sacrifice them to the compost heap and use a sulphur candle to sterilize the GH. You really don't want this destructive pest around when you start raising plants in the spring.
thanks for help, they are in the greenhouse as my garden is too wet over the winter to plant them out
i will def read that link
Bob that's a good site, thank you.
are there any controls that you water onto the soil? I used to use plant pins for my house plants but these seem to have disappeared from the GC. I now have problems with a tibouchina in my lobby - still flowering and getting the old fashioned "finger and thumb" treatment, but I think it needs a bit more than that.
Hi GA,
T&M say they have a particularly good variety of marigold for deterring whitefly, could be worth a try once you've got the existing infestation under control?
http://www.thompson-morgan.com/flowers/flower-seeds/marigold-seeds/marigold-tomato-growing-secret/299TM
all such great advice, thank you all so much