On Sat, 07 Aug 2004 11:12:46 +0100, Dougie Nisbet
wrote:

My Willow tree is swarming with wasps. I can't really see why they're
there, and what they're doing. The willow is covered in black aphids but
the wasps don't seem interested in them. The wasps just land on the
leaves, walk about a bit, then fly off. What's so attractive about willow
for wasps?

Probably giant willow aphid. There was a question about them a few
weeks ago. Much larger than your average greenfly, and they suck
through the bark rather than from the leaves. You'll probably find
loads of half drunk and stupefied wasps crawling around on the ground
underneath the tree.


--
Chris

E-mail: christopher[dot]hogg[at]virgin[dot]net