I set two 1yr old cobnut trees in 1999. They are now large, healthy
looking and bushy. Each year I see a few small red female flowers and
a number of catkins _but_ they never produce nuts.

Does anyone know if a severe prune might help produce nuts? I am
wondering if there is maybe too much foliage, weakening the tree and
thus reducing its fruiting potential.

Cheers,
Compo in Caithness