My aliums have done now - can I cut them back to the ground or is there any benefit from leaving them like that? I'm not particularly wanting more (was wondering if the self seeded), IF i did cut them back do I just go right down to the ground?
You may well find that the flowering stems are not actually connected to the bulb underneath. Pulling them off is the way to go. They will self seed and take a few years to reach flowering size.
Yes, you can cut your Alliums down whenever you find them unattractive! The leaves fade before the flowers are fully open anyway. They can self-seed and become invasive, they also replicate by producing additional bulbs.
@ren.b I envy you how I would love to be able to grow A shubertii. Luckily a friend gave me a seed head many years ago and it is still looking good. Great sprayed with gold paint too, at Xmas.
I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
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