Register with us or sign in
If you don't want the seeds for sowing or self sowing, then cut off the flower stalks so the plant transfers its energy from seed ripening to healthy roots and foliage, thus building a stronger plant for next year.
Don't cut it to the ground, let it die back on its own and then remove the dead stems.
Aconitum are poisonous so not eaten by slugs. However, when grown in thick clumps, mine lose their lower leaves which I assume is due to lack of light.
I haven't tried the Chelsea chop on mine but you could experiment and do half of yours next year and see what happens. You should get smaller, later flowering stems. an alternative would be to provide support early in the season so they can grow up and cover it but not flop.