Dunno, Jon. Last time we had really dark honey it was a Hampshire autumn harvest and was largely bramble, I believe. One colony seems to be working blackcurrant; the others may be on hawthorn as well as the last of the sycamores to flower. Bluebells probably coming to an end - haven't had time to go down into the wood. Clover just coming in ... not much blossom on the apple trees; I think that cold snap in April may have something to do with that (or the wretched deer taking off all the buds).