A woman holds a Sapporo Giant
Sapporo Giant
A gardener holding a giant Sapporo Giant
Cyan poses with a giant Sapporo Giant
A woman holds a Sapporo Giant
Sapporo Giant
A gardener holding a giant Sapporo Giant
Cyan poses with a giant Sapporo Giant

Cabbage Seeds,
Sapporo Giant #4

4.89 ReviewsSKU: #CB125Min. seed count: 100
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Description

(Brassica oleracea). What a show stopper! This big friendly giant will be your kids' next best friend! (And yours, too!) This giant cabbage was once a premier crop in Hokkaido, Japan. Noted as a unique variety since the 1800s, it was almost lost to history. The Japanese in the ''Showa" Period had quite the taste and fondness for this big brassica. Hokkaido growers report averages of 17 to 37 pounds each, or even up to 44 pounds in optimal growing conditions. Not popular for size only, the Sapporo Giant has won gold medals in Japanese taste tests. It has a natural sweetness and stays tender as it grows to its immense size. Thanks to a special team of dedicated growers, we are again able to bring this variety to the fore and protect it from becoming a relic of times past. To impress ... try making a Sapporo giant cabbage roll. It will fill a platter!

Growing Tips: Sapporo Giant thrives in cool climates and full sun, making it suitable for both home gardens and market production. It's best grown in spring or fall when temperatures are cooler, as it performs poorly in the heat of summer.

Plant Details

Botanical Name
Brassica oleracea
Life Cycle
Biennial
Sun Requirement
Full sun
Days to Germinate
7–10
Days to Maturity
65–100
Planting Depth
¼ in.
Plant Spacing
36 in.
Ideal Temperature
50–75°F
Frost Hardy
Yes

When to Grow

Sapporo Giant cabbage is ideally grown in cooler seasons. Start seeds indoors 6-8 weeks before the last expected frost date for a spring harvest. For a fall harvest, sow seeds in mid-summer. It typically takes about 65-100 days to mature, depending on the growing conditions. 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 the seeds about 1/4 inch deep in a seed-starting mix if starting indoors. Once seedlings develop their first set of true leaves, transplant them outdoors, spacing them about 36 inches apart due to the large size of the heads. This cabbage variety prefers well-draining, fertile soil with a slightly acidic to neutral pH (6.0-7.5).

How to Grow

To grow Sapporo Giant successfully, ensure it receives full sun, about 6-8 hours a day. Consistent watering is crucial; the plants should receive about 1-1.5 inches of water per week. Deep watering is recommended to promote strong root growth. Mulching around the base can help retain soil moisture and prevent weeds. Fertilize regularly with a balanced fertilizer to support its large size.

How to Save Seeds

  • If you plan to save seeds, isolate plants from other members of the cabbage species (kale, collards, broccoli, Brussels sprouts and cauliflower) by up to one mile to avoid cross pollination.
  • Cabbage is biennial, blooming only after experiencing a winter's chill, and will require overwintering with heavy mulch and row cover in cool winter areas.
  • For those with very harsh winters, consider digging up and placing in a root cellar until hard frost has passed.
  • In the second season, when flowers have passed and seed pods have dried, dig up the plants and hang upside down to dry.
  • Dried pods can be placed in a sack and crushed to release seeds. Remove chaff and detritus.
  • Place seeds in a glass jar and refrigerate for up to 5 years.

FAQ

How large can Sapporo Giant cabbage heads grow?

In optimal conditions, heads can reach between 17 to 44 pounds.

What are the ideal growing conditions for Sapporo Giant cabbage?

This variety thrives in full sun, with well-draining soil and consistent moisture. It can handle cooler temperatures and is suitable for USDA hardiness zones 3-11.

Can Sapporo Giant cabbage tolerate frost?

Yes, Sapporo Giant cabbage is quite frost-tolerant. Mature plants can withstand light frosts, making them suitable for late-season growing. However, it is advisable to protect young seedlings from frost to prevent damage.

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