At the end of March and through April the walnut trees will start to shed their crop. The green walnut husk surrounding the in-shell walnut will split open allowing the walnut to drop to the ground. Usually, the tree will shed any light or diseased walnuts first - clear these away and prepare for the fully formed walnuts to drop later. Remove any debris or litter and mow the grass down low.

Pick the walnuts up at least twice a week. Walnuts will deteriorate quickly if left on the ground, particularly if the walnut shell has a weak seal, as this allows moisture to creep onto the kernel and mould to develop.

For more information on growing and harvesting walnuts contact the NZ Walnut Industry Group www.walnuts.org.nz