Always to move or divide in autumn, as the foliage is dying back and if in doubt replant just a bit higher in the ground than it was previously. It's always been my understanding that they need cold to flower well. I don't know the science of it all though.
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Always to move or divide in autumn, as the foliage is dying back and if in doubt replant just a bit higher in the ground than it was previously. It's always been my understanding that they need cold to flower well. I don't know the science of it all though.