Yes, the best time to move a lot of plants is later summer to early fall (early september to mid-October). After the heat of the summer has passed but before the winter freeze threatens your precious plants.
I've dug mine and split them a couple of times while re-doing my landscaping, and the first year I just don't expect any blooms....after that it's a matter of how much I've broken the eyes as to how long it takes them to regain their size....but all of mine have survived and any "pieces" that were broken off I either replanted or gave to family and friends...They are fairly hardy plants but I hope I don't have to dig them again anytime
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soon...it's been three years and they are just now about the size they were before....
soon...it's been three years and they are just now about the size they were before....