How to divide perennials
Here are our simple tips for dividing perennials.
- Lift plants gently with a garden fork, working outwards from the crown’s centre to limit root damage. Shake off excess soil so that roots are clearly visible
- Some plants, such as Ajuga (bugle), produce individual plantlets which can simply be teased out and replanted
- Small, fibrous-rooted plants such as Heuchera, Hosta and Epimedium can be lifted and pulled apart gently. This should produce small clumps for replanting
- Large, fibrous-rooted perennials, such as Hemerocallis (daylily), require two garden forks inserted into the crown back-to-back. Use these as levers to loosen and break the root mass into two sections. Further division can then take place
- In some cases, a sharp knife, axe or lawn edging iron may be needed to cleave the clump in two
- Plants with woody crowns (e.g. Helleborus) or fleshy roots (e.g. Delphinium) require cutting with a spade or knife. Aim to produce clumps containing three to five healthy shoots
Plant divisions as soon as possible and water them in well. Alternatively pot up individually to build up size, overwintering pots in a frost-free environment.
Click HERE to see eight perennials that don’t need to be divided