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Autumn planting of Alliums (not!!)

How's this for not thinking ahead!! Bought some alliums from T&M which arrived last week, however, I cant get into my borders to plant them because too much growth abounds from existing herbaceous and other planting and I don't want (or need to) cut anything back to enable me to get them in the ground. Should I simply pot them up into plastic pots and then transfer them to open ground when there are a few more gaps when things have died down. Assume they will be happy to be moved late autumn/ winter (assuming its not freezing cold or very wet). Ive got about 60 bulbs in all. :-/
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Yes, that'll be fine.
Sounds like a lot of trouble to go to-I would be more inclined to store the bulbs in a cool dry place for a few weeks and then plant in the soil -there is still plenty of time for planting
Owing to drought, I planted most of mine very late last year and they did fine - even the ones I forgot and found in the garage in February when I did a tidy up. These last were late flowering but did OK so just store your bulbs somewhere cool, dark and dry till you have more space to get them in the ground.
I'm definitely going to try potting alliums this year. It sounds such a good idea. I hadn't realized you could do this and then place them where you want in the Spring. But what size pots do I need? How deep do I plant them? I know they are all different sizes, but I'm talking about allium schubertii and other large types.
Thanks for the advice. It's great to get practical, detailed answers to queries!
Last year in January I bought some which were reduced in B&Q and planted in the garden and they grew great this year
I do this with spring flowering bulbs - narcissii etc, just slot the pot into border gaps, whip out when they're over. Some people might think it's a bit of a cheat, but makes good use of limited space in borders.