Rasmus Broccoli on a white background.
Rasmus Broccoli with coins to show size on a white background.
Cooked and raw Rasmus Broccoli with a fork on a white background.
Rasmus Broccoli heads with watch faces and a Swiss knife on a white background.
A single head of Rasmus Broccoli with florets on a white background.
Rasmus Broccoli in a colander surrounded by several heads on a white background.
A gardener holding a massive bouquet of Rasmus Broccoli with a crazy 70s sweater on.
Ryan stylin&
Rasmus Broccoli heads with a plate of cooked broccoli on a white background.
Several heads of Rasmus Broccoli on a bright white background.
Rasmus Broccoli on a white background.
Rasmus Broccoli with coins to show size on a white background.
Cooked and raw Rasmus Broccoli with a fork on a white background.
Rasmus Broccoli heads with watch faces and a Swiss knife on a white background.
A single head of Rasmus Broccoli with florets on a white background.
Rasmus Broccoli in a colander surrounded by several heads on a white background.
A gardener holding a massive bouquet of Rasmus Broccoli with a crazy 70s sweater on.
Ryan stylin&
Rasmus Broccoli heads with a plate of cooked broccoli on a white background.
Several heads of Rasmus Broccoli on a bright white background.

Broccoli Seeds,
Rasmus

55 Reviews#BR115 · 100 seeds
Price
Regular price $4.00
Regular price $0.00 Sale price $4.00
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Description

(Brassica oleracea). From Switzerland’s Sativa Rheinau comes one of the finest open-pollinated broccolis we’ve grown. Rasmus forms thick, impressive 7-inch heads that rival—and often outshine—many modern F1 types. After the main harvest, plants rebound quickly with a strong flush of tender sprouting florets and sugary stems that keep the picking going. Uniform, productive, and packed with flavor, it’s a smooth operator for both market growers and home gardeners.

Plant Details

Botanical Name
Brassica oleracea
Life Cycle
Annual
Sun Requirement
6–8 hr.
Days to Germinate
5–10
Days to Maturity
60–70
Planting Depth
¼–½ in.
Plant Spacing
12–18 in.
Ideal Temperature
55–75°F
Frost Hardy
Yes

Growing Guide

When to Grow

Start Rasmus broccoli seeds indoors 6–8 weeks before your last frost date, or direct sow in midsummer for a fall crop. This cool-season variety matures best in mild to cool temperatures. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow seeds 1/4 to 1/2 inch deep in seed trays or directly in the garden. Transplant hardened-off seedlings when they have 4–6 true leaves, spacing them 12–18 inches apart in rows 24 inches apart.

How to Grow

Keep soil consistently moist and feed with a nitrogen-rich fertilizer every 3–4 weeks. Provide mulch to retain moisture and regulate temperature. Watch for cabbage worms and aphids—hand-pick or use organic insecticidal soap as needed.

How to Save Seeds

  • Broccoli is biennial—overwinter or replant mature plants for seed production.
  • Isolate by at least 1,000 feet from other Brassicas to maintain varietal purity.
  • Let flower stalks mature and dry fully on the plant.
  • Collect dry seed pods before they shatter naturally.
  • Store cleaned seeds in a cool, dry place for up to five years.

FAQ

Can Rasmus broccoli tolerate frost?

Yes, Rasmus broccoli is frost-hardy and actually benefits from cooler temperatures, which enhance flavor and head density. It’s an excellent candidate for fall harvests in most growing zones.

How big do Rasmus broccoli heads get?

Rasmus broccoli forms compact, dome-shaped heads about 6–8 inches in diameter, perfect for fresh eating or freezing. Secondary side shoots can be harvested after the main head is cut.

Can I grow Rasmus broccoli in containers?

Yes! Choose a large container (at least 3 gallons) with rich soil and good drainage. Provide 6–8 hours of sun daily and monitor water needs closely, especially during warm spells.

Browse our full range of broccoli seeds.

Customer reviews

5 / 5 5 Reviews

What gardeners are saying

  • Tender, great flavor: Tender heads with flavor growers keep coming back to.

  • Keeps on sprouting: Lots of side shoots after the main head stretch the harvest.

  • Store-sized heads: Good-sized heads, like the ones you would get from the store.

  • Easy to germinate: Good germination and an easy start from seed.

  • Handles warm weather: Held up into early summer heat in Florida and West Virginia.

More to grow!

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