Well it's autumn here and what a great surprise to find that one of the trees in our garden is a walnut! It is it's first fruiting year and the tree has given approx 3 kg of nuts. I scavenged an equal amount from the tree in a local park.
I recently planted three other walnuts: one grafted tree (supposedly higher yield and faster fruiting) and two seedling threes. It looks like the grafted tree has died, but the two seedling trees have survived. So, anecdotally anyway, the seedling trees are both tougher and cheaper!
Google found quite a few references to growing walnuts from seed (ie. the nuts) so intend to plant about 20 or so. Local nuts should make seedlings that are better adapted to local conditions (well that's the theory anyway). Maybe the won't bear as much as grafted trees but I'll make up for that with quantity :-). In ten years we should be completely awash in walnuts.
in May 2009