This is a follow-up question concerning Malva sylvestris 'Zebrina'. The plant has grown from seeds to more than 50 cm in height. I did not expect such a large specimen and would like to keep it around but in a different place in the garden.
What is the best way for moving this very plant (or its descendents) given that freezing will start in approx. a month? Should I just dig it up (1) this autumn or (2) next spring and transplant it, or can I (3) somehow obtain seeds from it that could be reused for next season?