Introduced in 1954, Waltham Broccoli yields 4 to 8-inch green heads that are nicely flavored. Beautiful, compact plants also produce some side shoots. (58-90 days)
Start seeds 4-6 weeks prior to desired transplanting date. Seedlings need bright artificial light or full sun; a cold frame is ideal. Set plants out 4 weeks prior to last frost date in the spring or 4-6 weeks before first frost when fall-planting. Plants need rich soil and abundant moisture to produce well. After the main head is harvested, plants often produce smaller florets over a long season. Always harvest broccoli just before flowers open. Spring plantings often bolt to seed in hot summer weather.