12 Yellow Crocus - Spring Blooming- Crocus "Giant Yellow" 12 Yellow Crocus Bulbs - Large Flowering Crocus "Golden Yellow" Harbinger of Spring! Plant in the fall for spring bloom. Bulbs will be refrigerated until mailed. Plant 2" deep. Leave in the ground for several years. Will rebloom in cold areas. Marde Ross & Company specializes in flowering bulbs and peonies and has been a licensed California Nursery for 30 years