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Has anyone got a solution to getting rid of white and black fly without using chemicals.
All my plants are in pots as my garden space is very limited.
I spray them with a washing up liquid solution in water, it seems to work for me
Done that, it does not work in my garden. thank you
Ok, sorry can't help more than that really. Apart from maybe marigolds? I plant them near plants that are prone to greenfly and it must help as I don't get a lot, usually just on my roses.
Bump...can anyone help Iris?
There is a thread about garlic spray, I've found it helps keep the bugs away.
Whitefly in particular can be very difficult to control, especially if you have them at this time of the year. As you clearly want to be as organic as possible, I think the answer for you is biological control using a parasitic wasp called encarsia formosa. It's a bit too cold to use them right now, but it should be ok in a few weeks. Not cheap but google should find you the best price.
Tagetes is supposed to discourage whitefly in the greenhouse - probably its strong smell - but I don't know if it'd work outdoors. It seemed to work in the g/h last year.
I'm trying garlic grown amongst the strawberries to scare off the aphids, and having read about it on here, I think I'll try the garlic spray too, there and elsewhere.
Calendula and other nectar-rich flowers attract hover flies, whose larvae feed on aphids, as do ladybirds and the increasingly rare lacewings.
And you can always try squashing them between finger and thumb!