Do Wasps Harm Veg?

[Chantenay]

I have a wasps nest on my allotment, and they appear to adore crawling all over my brassicas, which I must say are quite devoid of aphids or caterpillars. Are the wasps my friends, or should I ask them to leave quietly?

[Chantenay]

[Mrs Ava]

Hmmmm, I have a similar problem.  Looking forward to the reply.

[tim]

Wasps are useful predators. = Tim

Later - Just seen Stephan's reply to your other question.