Blub Planting - Knowledgebase Question

Granada Hills, CA
Avatar for bigrod1955
Question by bigrod1955
November 5, 1999
I live in California and would like to know when to plant bulbs for spring blooming? (tulips, crocus, hyacinths, iris and daffodils).

Answer from NGA
November 5, 1999
Many plants, including most common bulbs, have an annual cycle of growth and rest. The hardy spring-bloomers you mention (tulips, daffodils, crocus, and hyacinths) rest during the hot summer and cold winter, and won't wake up until spring has arrived. The mechanism for this is the need for a certain number of chilling hours to break dormancy.

If your cold-hardy bulbs don't get adequate chilling (6-10 weeks at near-freezing temperatures), then they won't bloom.

Since you live in a mild winter climate you can provide the bulbs with their required chill by placing in the refrigerator for 6-10 weeks, then planting outdoors.

Iris doesn't require any special treatment and can be planted now (if you have the rhizomes) or in the spring when they become available through catalogs or garden centers.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by Murky and is called "Eastern Redbud and Evergreens"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.