Lift and divide irises

What to do

• Lift clumps of irises from the soil with a fork.
• Cut the leaves in half horizontally so they need less water as the roots regrow.
• Split the clumps apart with a sharp knife, making sure each piece of rhizome has roots attached.
• Replant in groups 30cm (1ft) apart, with the rhizome just below the surface.
• Finish by watering and keep well watered until established.