Flowering potatoes and sprouting walnuts

The moimoi potatoes I grew from potato seeds are flowering well.  As well as these flowers, there are smaller ones still coming on.

Unfortunately, the moimoi tray was tipped over by the chickens in the shed, and were mixed with who knows what.  So there are some other potatoes flowering.  If I want to save seed from the moimoi, I need to dehead these and mark any existing flowers that may have been cross pollinated with these.

Maybe a year ago, I was given large walnuts from some store.  Maybe a Chinese supermarket.  So a while ago after having them sitting in the cupboard, I planted them all in a pot and left them outside.  It looks like one has sprouted.  Of course, walnuts have a 6-10 year period before they produce more nuts if I recall correctly..