You'll often hear this being talked about by gardeners, especially at this time of year: but what is it, and why do we do it? There are various theories about…
Always wear gloves when handling this plant as the poisons can be easily absorbed by the skin.
You can divide plants every third year in the autumn or late winter. Alternatively, propagate by seed.
Pests, diseases or disorders
What out for aphids and fungal stem rot.