Posted: 14/07/2014 at 18:09
For me roots or tops are not eaten by slugs etc.
Roots will rot in wet or damp cold soil. Paradoxically, although liking dry hot conditions agastaches still need a decent dose of water now and then
Victoria, agastaches do NOT like being dug up. From seed they won't be black adder...it's sterile variety
Never plant them out in autumn or winter. A guarantee of plants next year is to grow on in pots and then over winter them. If you buy now pot on, water now and then and hold back until mid spring before planting out