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in Problem solving
As a new owner of a greenhouse I became aware that white fly can be a major curse in the G/H. Yellow sticky fly traps were advised, went to various cheap places; ended up having to get them from B&Q at £4.98 for 5! If the greenhouse gets quite hot you have to change them quite frequently; it starts to get expensive. Online, I found American recipes for making your own involving stuff we can't get here (Tanglewood) Another recipe suggested coating yellow card with petroleum jelly (Vaseline). Has anyone had any success with this?
Never been plagued with whitefly in a greenhouse, outside yes. Those things catch a lot of useful insects, put it in the bin. Companion planting has done me fine for the past 10yrs the best deterrent for any unwanted beasties, organic and friendly too.
I agree with marshmello. I get a lot of tiny spiders in the GH which don't harm the plants but seem to keep the beastie population down.
Thank you both