Ishikura Improved
Allium fistulosum
 Ishikura Improved
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Seed #071 |
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This is a traditional medium early Japanese type bunching onion. At maturity, the stalk has white shanks up to 20-24" long with 6-7 deep green, thick leaves. These green onions do not form bulbs and do not multiply by division. The Ishikura Improved is tolerant to warm and cool temperatures and is suitable for winter harvesting in some areas.
- Warm/cool season annual
- Approx. 1200-1300 seeds in packet. (A seed will vary in weight and size within a given seed lot. The number of seeds stated is only an estimate.)
- 197,000 seed count per pound.
- Maturity: Approx. 40-50 days
- Planting season: Late spring to fall
For quantities greater than 500 lbs, or for special requests such as seed treatment, ask us for a price quote on this variety.
Cultivation: Prepare fertile, well-drained soil. Sow seeds in a sunny location in late spring after danger of all frost is passed and when soil temperatures are consistently above 50° or fall. Keep soil moist and fertilize as needed. Longer white stems can be achieved by mounding earth up over the stems to blanch them. Bunching onions may be harvested at any stage, from microgreen to full maturity. Plants are mature when green leaves reach 6". White stems up to 28" can be achieved by mounding earth up over the stems to blanche them.
Germination
Temperature |
Seed
Depth |
Seed
Spacing |
Thin
To |
Row
Distance |
| 50-95°F |
1/4-1/2" |
1" |
2" |
14-20" |
Please note: Maturity, adaptability and disease tolerance may differ under your specific climate and/or growing conditions.
Culinary tips: Especially popular in Japan for sukiyaki, soup, and salads. Can be boiled and add miso dressing.
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