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Thanks for the correct identification Tim Rich. Could you tell me a couple of key differences between Black and Hedge Mustard please.
hedge mustard has very narrow wedge-shaped paler yellow petals, black mustard has larger deep yellow petals and the base has a stalk and the limb is nearly round.
I don't get royalties, so can recommend my BSBI Crucifer handbook where it is all very clearly laid out...
Thank you, I will probably get that handbook, looks like it would be very helpful.
It IS helpful! More like essential.
Lat/Lng: 50.2, -5.3
OS grid ref: SW6645