Oriental Giant Japanese Spinach Seeds

Oriental Giant Japanese spinach is a fast-growing and flavorful variety well suited to home gardeners and small-scale growers. This open-pollinated Asian heirloom produces extra-large, deep green leaves with a sweet, mild flavor and tender texture that remains even at full size. The upright growth habit makes for easy harvesting, and the broad, glossy leaves are ideal for salads, sautés, soups, and steaming. Best grown in full sun to partial shade, Oriental Giant thrives in well-drained, fertile soil with consistent moisture.

Variety Details

• Botanical name: Spinacia oleracea
• Plant type: Hardy Annual
• Growth habit: Upright
• Crop category: Spinach
• Kitchen profile: Oriental Giant Japanese spinach is a fast-growing and flavorful variety well suited to home gardeners and small-scale growers.
• Product format: Seed packet

Sowing & Growing

• Germination temperature: Soil Temperature: 45–75°F Planting Depth: 1/2" Germination: 5–10 Days Height At Maturity: 6"–8" Days To Maturity: 35–50…
• Maturity: Soil Temperature: 45–75°F Planting Depth: 1/2" Germination: 5–10 Days Height At Maturity: 6"–8" Days To Maturity: 35–50…
• Light: Full Sun
• Planting season: Fall or Spring or Winter
• Starting location: Direct Sow

Use Oriental Giant Japanese Spinach as a cool-season leafy crop, sowing into a prepared bed when local temperatures fit the recorded range. Keep the shallow seed zone from drying during establishment, then thin seedlings so leaves have room to expand. Harvest individual outer leaves or whole plants at the preferred stage. As days warm, monitor development and soil moisture closely. A dated label helps compare actual emergence and harvest timing with the figures supplied.

Use a dated label for Oriental Giant Japanese Spinach and compare actual emergence, growth, and harvest or bloom timing with the ranges in the current record. Local soil, temperature, light, moisture, and planting date can shift results. Keep observations with the remaining packet so the next sowing can be adjusted without replacing product-specific measurements with a universal calendar.

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