I leave mine in the ground, with a bit of a mulch if I get around to it (which might just be scraping up fallen leaves over them). Sandy well drained soil here though, they wouldn't like soggy bottoms all winter.
Doncaster, South Yorkshire. Soil type: sandy, well-drained
I left mine in the pots because i didn't get round to taking them out. Emptied out the pots a couple of months ago expecting them to be dead but they were fat and healthy so i removed the old soil as much as possible and repotted them. I think i got away with it because it was a mild dry winter. I don't think I'd really recommend this method though.
I leave the ones that are in the ground where they are and just cover with mulch, but the new ones, from seed or new tubers I overwinter, they will then be planted out next year. I know that @Hostafan digs all of his up with a clump of soil on them and puts them in the poly tunnel just as they are for the winter, then when they shoot next year he plants them out again. Leaving them in the pots is fine. If you have a frost free GH for them. Under the bench is good.
Gardening on the wild, windy west side of Dartmoor.
I’ve tried leaving the in the ground with a mulch ( works well in dry winters), letting the plant go dormant in a pot in the greenhouse ( only worked if I watered it a little ) and lifting and storing in a shed ( they all rotted as I left damp soil around them.
i would say, lift, dry and store if you live in an area with heavy clay soil or mulch and leave in situ if you have free draining soil.
Perfect Andrew, we have very strong winds and although wet, it soon dries up, very free draining. I don’t recommend it to others it’s just what I do. The secret is leaving them to get really dry before storing.
Gardening on the wild, windy west side of Dartmoor.
Lifting has failed two years in a row for me, I’ve only had one survive - a giant mass of tubers that grows six feet tall - and Id treated it exactly the same as the others.
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I think i got away with it because it was a mild dry winter. I don't think I'd really recommend this method though.
I know that @Hostafan digs all of his up with a clump of soil on them and puts them in the poly tunnel just as they are for the winter, then when they shoot next year he plants them out again.
Leaving them in the pots is fine. If you have a frost free GH for them. Under the bench is good.
i would say, lift, dry and store if you live in an area with heavy clay soil or mulch and leave in situ if you have free draining soil.
I don’t recommend it to others it’s just what I do. The secret is leaving them to get really dry before storing.
Have you tried giving them some moisture and had bad results?
https://www.amazon.co.uk/Vitax-Ltd-225g-Sulphur-Yellow/dp/B001CN1SCI
Can only help surely?
i won’t bother a third year.