I don't have an answer for this yet.
Apparently the citrus gall wasp is a native to Australia, so you won't see this problem in other places.
The wasp lays its eggs in the new wood of a citrus tree, and the eggs cause a gall to grow. Eventually, they hatch and lay more darned eggs. The galls stress the tree, and if left untreated will eventually kill it, as well as continually providing a source of gall wasps to lay eggs in other trees.
However, the only treatment I've seen mentioned it to prune out the galls and burn them. This means that my young lime & lemon never get any bigger, because I have to prune out almost all of their new growth.
I've asked my question on this gardening forum: ABC Gardening Australia. I hope someone can help.
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1 comment:
Hey babe, loving the blog. :-)
I'm afraid I saw an episode on Gardening Australia that also followed the "prune all affected areas" routine. :-(
I wonder if you could experiment? If you have only little trees could you try something like wrapping the affected areas in gaffer tape so the hatched wasps can't escape and will die in situ?
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