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Castle Dome Hybrid Broccoli Seeds
★ Best Seller Non-GMO

Castle Dome Hybrid Broccoli

$4.50 Packet - 100 Seeds
Mix ’n Match: buy 20+ eligible packets and pay just $3.75 each

Packet sizes count toward the offer. Bulk, PakPlus, and ProPak sizes are excluded.

Packet Size
Flat $7.99 shipping Germination guaranteed Non-GMO
Not sure when to plant in your area? Planting dates depend on your local frost dates and growing zone.
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Quick Facts
Days to Maturity75 days
SunlightFull Sun
Spacing5 - 10 Inches
Germination5–10 days
Growing Information

Growing Castle Dome Hybrid Broccoli

‘Castle Dome’ Hybrid Broccoli is an early-maturing variety known for vigorous growth, dependable production, and attractive medium-green crowns. Compact plants produce high-domed heads with tight, small beads and continue growing through both warmer and cooler conditions.

Start ‘Castle Dome’ indoors for transplanting or sow directly in the garden when conditions are suitable for broccoli. Grow plants in fertile, well-drained soil with consistent moisture to support strong growth and well-formed heads.

Harvest the main crown once it reaches the desired size and the beads are still tight. After the central head is removed, continue checking plants for side shoots that can provide additional smaller florets. The mature heads also hold well in the garden, giving you a little more flexibility at harvest time.

‘Castle Dome’ is well suited for fresh eating, steaming, roasting, sautéing, and other cooked dishes, with both the main heads and side shoots providing useful harvests.

  • Days to Maturity: 75 / From Transplant
  • Sow Method: Start Indoors
  • Sow Depth: ½ Inch
  • Spacing: 5 - 10 Inches
  • Sun: Full Sun
  • Height: 20 - 24 Inches

Catalog Page: 4

How to start

Start Indoors

Sowing depth

½ Inch

Plant height

20 - 24 Inches

Botanical name

Brassica oleracea var. italica

Questions

FAQ

How should I start these seeds?
Recommended sow method: Start Indoors.
How deep should I sow the seeds?
Sow at a depth of ½ Inch.
How long until they germinate?
Typical germination: 5–10 days.
How far apart should I space them?
Recommended spacing: 5 - 10 Inches.
How much sun do they need?
Recommended sun exposure: Full Sun.
What’s your germination guarantee?
We stand behind the germination quality of our seed. If you have a germination issue, contact our team and we'll help make it right.
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