Calabrese
Brassica oleracea italica
HOW TO GROW BROCCOLI
Start indoors 4-6 weeks before last frost and plant out 2 weeks before frost; or direct seed 2 weeks before last frost. For fall harvest, transplant 8–12 weeks before first frost. In a hoophouse, you can plant 2-3 later. We seed in March under cover, first of May in the open. We seed from July 1 to August 15 for fall harvest in zone 8b. Broccoli grows best in the 60s˚F so plant for best temperatures in your area. For seed in Zone 7b or warmer, direct sow in early January under Row cover. Soil pH 6.0-7.5. Hardiness zones 4-10. Biennial.
Days from maturity calculated from the date of seeding. Average 6,000-9,000 seeds per ounce. Average 58M seeds per acre. Federal germination standard: 75%. Usual seed life: 5 years. Isolation distance for seed saving: 1 mile.
Planting Depth 1/4-1/2”
Soil Temp. Germ. 65-75˚F
Days to Germ. 5-10
Plant Spacing 18-24”
Row Spacing 24-36”
Days To Maturity 58–90
Full Sun, Moist Well Drained
Days from maturity calculated from the date of seeding. Average 6,000-9,000 seeds per ounce. Average 58M seeds per acre. Federal germination standard: 75%. Usual seed life: 5 years. Isolation distance for seed saving: 1 mile.
Planting Depth 1/4-1/2”
Soil Temp. Germ. 65-75˚F
Days to Germ. 5-10
Plant Spacing 18-24”
Row Spacing 24-36”
Days To Maturity 58–90
Full Sun, Moist Well Drained
Calabrese Seed Count
1 Ounce ≈ 7,088 seeds
.25 Pound ≈ 28,350 seeds
1 Pound ≈ 113m seeds
- 200 Seeds$4.10
- 2000 Seeds$12.50
- 1 Ounce$32.00
- 1/4 Pound$68.00
Popular market variety, 4–8” tight heads. Introduced to America in the 1880s by Italian immigrants. Smaller compact plants, consistent mid-sized heads, good salad size. Plants grow to 4’ in the fall. Also harvest smaller side shoots after central head is harvested. Best for late heads, while others are making pods, ...
Popular market variety, 4–8” tight heads. Introduced to America in the 1880s by Italian immigrants. Smaller compact plants, consistent mid-sized heads, good salad size. Plants grow to 4’ in the fall. Also harvest smaller side shoots after central head is harvested. Best for late heads, while others are making pods, Calabrese is still growing heads. Tags: Color: Green, Specialty: Bolt Resistant, Heritage: Heirloom, Season: Spring Fall.
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