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Welsh Onion
Ishikura onion is a popular, fast-growing Japanese bunching onion (Allium fistulosum) known for its long, thick white stalks and mild flavor, typically reaching up to 2 feet in height without forming bulbs. It is highly versatile, ideal for stir-fries, soups, and salads, and can be harvested at various stages from pencil-thin to thick, carrot-sized stalks. It is a very hardy, cold-tolerant, and versatile variety suitable for both spring and autumn sowing, making it excellent for year-round harvesting.
Key Characteristics and Growing Tips:
Harvesting: They do not form bulbs, providing a continuous harvest of crisp, tender, white stems.
Hardiness: Highly cold-tolerant, allowing for late-season or winter harvesting.
Cultivation: Thrives in full sun to partial shade in well-drained soil.
Spacing: Requires 4–6 inches of space.
Planting: Direct sow in early spring or in autumn for spring harvest.
Uses: Excellent for stir-fries, salads, and soups.
| Type | Onion |
| Family | Allium Family |
| Temperature Soil | 40F+ |
| Temperature Daytime | 55-75F |
| Temperature Evening | 45+F |
| Lighting | Full, 6-8 Hous Per Day |
| Water | Steady, 6 Gallons / Week |
| Maturity | Long, 80-120 Days Harvest |
| PH Neutral | 5.5-6.5 |
| Zones | 3A-9B |
| Plant Placement | 12 Plants, 3 Per Row |
When planting onions in your garden, make sure you situate them in full sun. Onions are shallow rooted and grow best with steady watering, especially during the bulbing phase. Adequate air circulation helps reduce the risk of foliage disease. Keep an eye out for onion maggot, whose hatched larvae crawl into the bulb and feed on the roots, stem, and developing bulb which will destroy your crop. With their unique flavors--some strong and overpowering, some mild and sweet--onions can be added to nearly any dish and can be cooked every way, as well as eaten raw.
COMMON PESTS: Thrips, Leaf Miners, Onion Maggot
SUSCEPTIBLE TO: Damping Off, Black Mold, Fusarium Wilt, Downy Mildew, Rot, Smut, White Rot
Welsh Onion
Ishikura onion is a popular, fast-growing Japanese bunching onion (Allium fistulosum) known for its long, thick white stalks and mild flavor, typically reaching up to 2 feet in height without forming bulbs. It is highly versatile, ideal for stir-fries, soups, and salads, and can be harvested at various stages from pencil-thin to thick, carrot-sized stalks. It is a very hardy, cold-tolerant, and versatile variety suitable for both spring and autumn sowing, making it excellent for year-round harvesting.
Key Characteristics and Growing Tips:
Harvesting: They do not form bulbs, providing a continuous harvest of crisp, tender, white stems.
Hardiness: Highly cold-tolerant, allowing for late-season or winter harvesting.
Cultivation: Thrives in full sun to partial shade in well-drained soil.
Spacing: Requires 4–6 inches of space.
Planting: Direct sow in early spring or in autumn for spring harvest.
Uses: Excellent for stir-fries, salads, and soups.
| Type | Onion |
| Family | Allium Family |
| Temperature Soil | 40F+ |
| Temperature Daytime | 55-75F |
| Temperature Evening | 45+F |
| Lighting | Full, 6-8 Hous Per Day |
| Water | Steady, 6 Gallons / Week |
| Maturity | Long, 80-120 Days Harvest |
| PH Neutral | 5.5-6.5 |
| Zones | 3A-9B |
| Plant Placement | 12 Plants, 3 Per Row |