The agapanthus is now past its best and wondered how best to prepare it for next year.? Should I just cut the head off Or cut the stalk right back as far as I can?
I have removed all but one flower head on mine as I want the seeds. The others were cut down to the base as it looks better and stops you poking out your eye on tall, stiff stems. They need the foliage left on to feed the roots and build up energy for next year. Mine is a ceramic pot in full sun and will be watered till the leaves die down and then placed in a frost free shelter for winter.
Vendée - 20kms from Atlantic coast.
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You can cut off the stalks or leave them till they dry out if you want to collect the seeds to grow some more.