Broccoli Seedlings E1449439519919

Broccoli Seedlings

Broccoli will come to harvest in 55 to 85 days when grown from transplants and 70 to 100 days when grown from seed. Description. Broccoli is a hardy biennial grown as a cool-season annual. It grows 18 to 36 inches tall and has broad, thick leaves and a thick main stalk. Broccoli forms single or multiple flowers “heads ” of tiny blue-green flower buds. The flowers heads are eaten before they bloom; buds open to tiny yellow flowers. Broccoli will bolt and go to seed in warm temperatures or when daylight hours lengthen. Yield. Plant 2 to 4 broccoli plants for each household member. Site. Broccoli grows best in compost-rich, well-drained soil with a soil pH between 6.0 and 6.8. Broccoli grows best where air temperatures range between 45° and 75°F. Broccoli is frost hardy and can tolerate temperatures as low as 20°F. In regions where there is heavy rain or sandy soil, aged-compost should be added to the soil to supplement soil nitrogen.