Snowball Y Improved Cauliflower is an (OPEN-POLLINATED) HEIRLOOM. 75 days. Most popular OP variety! Tasty, 6-8″ diameter, deep snow white heads are smooth and protected by silvery-green, heavy leaf growth. Snowball Y Improved Cauliflower is known for vigorous, rapid growth and long harvest. Well adapted to short season areas. Self-blanching, needs no trying. Excellent for fresh markets and home gardens. Approximately 8,900 seeds per ounce or 142,000 seeds per pound.