Calabrese, Organic Broccoli Seeds

Calabrese, Organic Broccoli Seed

Packet
$3.25
Sale price  $3.25 Regular price 
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Calabrese, Organic Broccoli Seeds
Calabrese Organic Broccoli Seed

Calabrese

Organic Broccoli Seed

Select size: Packet
  • Large dark-green heads begin an extended season of side shoots
  • Slow bolting helps plants hold through cool-night conditions
  • Open-pollinated plants suit short-season areas
  • Certified organic seed

Key Attributes

Botanical Name
Brassica oleracea
Days to maturity
70 Days
Sun
Full Sun
Packet
200 Seeds

About Calabrese, Organic Broccoli Seed

The Green Sprouting Calabrese produces large dark green heads bursting with flavor. This broccoli with is a favorite, that now is available as organic seed! Good in short season areas with cool nights. It will produce many lateral or side shoots over a long season. It is slow bolting with a flavor that can't be beat. This seed is certified organic.

Growing details

Planting

Sow Depth
1/4"
Days to Germination
3–10 days
In-row plant spacing
18-24"
Row Spacing
3'

Plant profile

Maturity
Spring, Fall
Life Cycle
Annual
Plant Height
30 inches
Growth Habits
Upright, Spreading

Seed & variety

Seeds Per Ounce
7,500
Color
Green
Seed Type
Open Pollinated, Organic
Growing Season
Cool-Season Crop
Categories
Broccoli
Additional Characteristics
Slow Bolting
Features

Key Attributes

Botanical Name
Brassica oleracea
Days to maturity
70 Days
Sun
Full Sun
Packet
200 Seeds

About Calabrese, Organic Broccoli Seed

The Green Sprouting Calabrese produces large dark green heads bursting with flavor. This broccoli with is a favorite, that now is available as organic seed! Good in short season areas with cool nights. It will produce many lateral or side shoots over a long season. It is slow bolting with a flavor that can't be beat. This seed is certified organic.

Growing details

Planting

Sow Depth
1/4"
Days to Germination
3–10 days
In-row plant spacing
18-24"
Row Spacing
3'

Plant profile

Maturity
Spring, Fall
Life Cycle
Annual
Plant Height
30 inches
Growth Habits
Upright, Spreading

Seed & variety

Seeds Per Ounce
7,500
Color
Green
Seed Type
Open Pollinated, Organic
Growing Season
Cool-Season Crop
Categories
Broccoli
Additional Characteristics
Slow Bolting
Growing Instructions

Growing Instructions

Before Planting

Reserve a full-sun site for Broccoli with fertile, well-drained soil where brassica crops have not recently grown. Incorporate compost and use a soil test to adjust pH and nutrients, supplying lime before planting only when needed. Prepare a firm, weed-free bed and harden transplants gradually before setting them outdoors.

Planting

Start broccoli indoors 4–6 weeks before transplanting, sowing seed about 1/4–1/2 inch deep. Maintain 70–75°F until emergence, then grow seedlings near 60–65°F under strong light. Harden for one week and transplant 12–18 inches apart while weather is cool. For fall crops, start seed in early to midsummer.

Watering

Provide about 1–1½ inches of water weekly and keep moisture steady while broccoli develops. Water deeply at soil level, especially during heading or enlargement, and avoid prolonged saturation.

Fertilizer

Side-dress broccoli with a nitrogen-containing fertilizer after establishment and during rapid growth if needed. Follow soil-test recommendations and avoid concentrated fertilizer near stems.

Harvesting

Cut the central broccoli head when buds are tight, firm, and fully developed but before yellow flowers open. Leave the plant and side shoots intact; smaller shoots can be harvested repeatedly as they mature.

Tips

Use insect netting or row cover immediately after planting broccoli, securing every edge. Rotate brassicas to a new bed each season, and remove crop residue promptly after harvest.

AVG. Seeding Rate

1,000 seeds/333' at 3 seeds/ft., 49,800 seeds (avg. 8.3 oz.)/acre spaced 7" apart in rows 18" apart.

Pests & Diseases

Black rot produces yellow V-shaped lesions advancing inward from broccoli leaf margins; clubroot causes swollen roots and daytime wilting. Start with clean seed or transplants, rotate brassicas, and keep contaminated soil off tools. Where clubroot exists, improve drainage and raise soil pH toward 6.8 according to a soil test.

Inspect broccoli leaves and developing heads for imported cabbageworms, loopers, flea beetles, aphids, and root maggots. Use insect netting before pest entry, handpick caterpillars, and rotate the next brassica planting.

Our Promise

Our Promise

Urban Farmer

Satisfaction Guarantee

At Urban Farmer, we believe every great garden begins with dependable products and seeds you can trust. We’re committed to helping gardeners and growers succeed—from planting to harvest.

100% Non-GMO Seed
Every Urban Farmer seed is guaranteed to be non-GMO and free from genetic engineering.

High-Quality Seed
We carefully select dependable varieties for strong performance, uniform growth, excellent flavor, and rewarding harvests. We produce many varieties on our Indiana farm and work closely with trusted growers across the United States.

100% Satisfaction Guarantee
Your satisfaction matters to us. If you aren’t satisfied with your purchase, we’ll provide a replacement or refund the purchase price in accordance with our guarantee.

Whether you’re planting your first garden or growing on a larger scale, you can count on Urban Farmer for quality products, helpful service, and support throughout the growing season.

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Calabrese, Organic Broccoli Seeds

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