Perennials, Bulbs, Tubers in California Need to Be Divided to Remain Healthy

Clumping perennials, bulbs or plants that have rhizomes or tubers need to be divided periodically to keep them healthy. Competition and overcrowding can weaken growth.

When planting bulbs, mark the spot where the bulb has been planted with a stake or part of a bamboo cane so you can find the bulb later for winter storage. (These are summer blooming bulbs we’re talking about).

Deciduous and semi-deciduous perennials can be cut back to about four inches from the ground when you divide and transplant. Cut off all the dead and damaged material from the center of the clump. When you finish, there should be at least several new clumps to replant. Evergreens should not be cut back, just remove the dead leaves.

The climate in various parts of the state necessitates digging up some varieties every fall and storing them so they don’t rot in wet winter soil. Ask a California Certified Nurseryperson at your local garden center about the requirements in your area.