mbb wrote in message ...
Has anyone any experience with Walnut 'Lara'?


No, but these guys might have the answers:
http://www.walnuttrees.co.uk/
Times to yield in UK climates look a bit ambitious to me.

For example, how quickly would it crop, is it self fertile? I'm interested
in both Walnuts and Cobnuts, but have very little space to fit them in, so
need self fertile, and small, bush type trees.


Correct me if I'm wrong, but all the walnuts grow eventually
afaik to be serious size trees. Cobnuts are inherently much smaller, though
they grow at about the same rate when young,
Cobnuts can be kept small by pruning.


--
Anton