So long as it is well drained I think lupins are happy in clay. Back in the 1960's they were common in most front gardens in the clayey soil and wet conditions in Manchester. Back then there were no snails around and the hard winters probably help keep the population down, global warming has changed all that.
Success this year! In a pot (moulded concrete so a rough design helps) surrounded by small stones and started with a well established plant. Point taken regarding trying to force this issue but I see it as a challenge rather than wasting time on something that will not work. Good luck to others....
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So long as it is well drained I think lupins are happy in clay. Back in the 1960's they were common in most front gardens in the clayey soil and wet conditions in Manchester. Back then there were no snails around and the hard winters probably help keep the population down, global warming has changed all that.