To divide heleniums use two forks back to back to part established clumps, using the material on the outside because it’s the most vigorous plant material. You can divide down to a single rosette if you need to. Heleniums are robust growers and will make a substantial plant fairly quickly – even from one rosette.

When can I transplant helenium?

The best time to plant Heleniums is around the last week of March. The plants need to establish themselves well before winter so don’t plant them after the end of June.

Can all perennials be split?

When to divide perennials Plants can be divided successfully at almost any time if they are kept well-watered afterwards. However, division is most successful when the plants are not in active growth.