Allium fistulosum 'Ishikura Long BIO': Japanese spring onion for a long-lasting harvest

Allium fistulosum 'Ishikura Long BIO' is a high-quality, organic Japanese onion variety known for its long, thick white stems and mild, spicy flavor. This bunching onion doesn't form a traditional bulb, making it ideal for fresh harvesting and continuous cultivation. Ishikura Long is suitable for both annual and perennial cultivation, although annual cultivation is generally preferred to maintain optimal harvest quality and productivity.

Characteristics of Allium fistulosum 'Ishikura Long BIO'

• Shaft color: bright white

• Shaft length: extra long and thick, ideal for culinary applications

• Height: approx. 50 cm

• Taste: mild, slightly spicy and aromatic

• Flowering: optional, usually not desired for cut vegetables

• Uses: fresh spring onion, cut greens, chives, bouquet greens

• Growing conditions: full sun, nutritious, well-drained soil

• Winter hardy: resistant to low temperatures

• Pest resistance: thrips tolerant

Growth and cultivation advice

Allium fistulosum 'Ishikura Long BIO' is fast-growing, hardy, and low-maintenance, making it a reliable choice for both home and professional cultivation. Its long, straight stems make harvesting easy and consistent, making it ideal for fresh sales or culinary use.

Sowing period: end of March to August
Sowing method: directly outside in rows, 3–5 cm in the row and 20–25 cm between the rows
Harvest period: continuously from April to October, depending on sowing time and conditions

Young plants should be thinned and tended regularly to ensure optimal growth into strong, long stems. Ishikura Long thrives in light, well-drained soil and a sunny location. Sufficient water and organic nutrients support the production of thick, white stems and healthy foliage.

Culinary applications

The long white stems and mild, aromatic foliage of Ishikura Long make this Japanese spring onion a versatile vegetable:

• Salads: thinly sliced ​​for a fresh taste

• Stir-fries: adds a mild onion flavor

• Soups and sauces: can be used raw or cooked

• Garnish: The long stems and green foliage make for an attractive presentation

Thanks to the non-spherical habit, the stems remain uniform and tight, ideal for professional cut vegetable harvesters or home gardeners who want consistent quality.

Benefits of Allium fistulosum 'Ishikura Long BIO'

1. Extra long and thick white stems: perfect for culinary applications

2. Mild, aromatic flavour: suitable for salads, cooking and garnish

3. Hardy and fast growing: suitable for a long harvest period

4. Easy to grow: tolerant to various soil types and pests

5. Organic quality: sustainable and environmentally friendly

Garden combinations and styling

• Herb border: combine with herbs such as Allium schoenoprasum or Anethum graveolens for an edible garden

• Vegetable beds: combine well with carrots, lettuce or cabbage

• Decorative garden: the long white stems add vertical structure and create visual contrast

Conclusion

Allium fistulosum 'Ishikura Long BIO' is a reliable, healthy, and versatile Japanese spring onion that offers a long-lasting harvest from spring to autumn. With its long, thick, white stems, mild flavor, and winter hardiness, this variety is ideal for both home and professional gardeners. The combination of ease of use, aesthetic value, and culinary versatility makes Ishikura Long an indispensable addition to any garden, vegetable patch, or cut vegetable garden.