Heshiko Bunching Onion

Family: Amaryllidaceae Vegetable

Planting Schedule

Provide your location or planting zone to unlock dates and add Heshiko Bunching Onion to a garden.

Sweet, crisp green tops with a gentle onion perfume rise in tidy bunches—Heshiko Bunching Onion delivers a fresh, garden-bright bite and a tender, hollow stalk that stays pleasantly snappy.

At maturity, the bulbs form neatly at the base, with smooth skins and a mild, clean flavor that shines in quick stir-fries, savory sauces, and bright garnishes. Grow it for effortless harvests at about 60 days, pulling bunches as you go for continuous, flavorful kitchen-ready greens.

Light: Full SunMaturity: 60 DaysHabit: Upright

Botanical illustration of Heshiko Bunching Onion

Location not set yet

Enter your ZIP for local crop dates

Heshiko Bunching Onion Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	Apr 20th	Jun 1st	Jul 31st – Aug 1st
Zone 2a	Apr 13th	May 25th	Jul 24th – Aug 29th
Zone 2b	Apr 3rd	May 15th	Jul 14th – Aug 25th
Zone 3a	Apr 3rd	May 15th	Jul 14th – Sep 1st
Zone 3b	Apr 7th	May 19th	Jul 18th – Sep 21st
Zone 4a	Apr 3rd	May 15th	Jul 14th – Sep 24th
Zone 4b	Apr 1st	May 13th	Jul 12th – Sep 27th
Zone 5a	Mar 27th	May 8th	Jul 7th – Sep 30th
Zone 5b	Mar 23rd	May 4th	Jul 3rd – Oct 5th
Zone 6a	Mar 20th	May 1st	Jun 30th – Oct 10th
Zone 6b	Mar 14th	Apr 25th	Jun 24th – Oct 16th
Zone 7a	Mar 9th	Apr 20th	Jun 19th – Oct 20th
Zone 7b	Feb 27th	Apr 10th	Jun 9th – Oct 28th
Zone 8a	Feb 18th	Apr 1st	May 31st – Nov 5th
Zone 8b	Feb 9th	Mar 23rd	May 22nd – Nov 12th
Zone 9a	Jan 23rd	Mar 6th	May 5th – Nov 26th
Zone 9b	Dec 29th	Feb 9th	Apr 10th – Dec 9th
Zone 10a	—	Oct 1st	Nov 30th – Feb 28th
Zone 10b	—	Oct 1st	Nov 30th – Feb 28th
Zone 11a	—	Oct 1st	Nov 30th – Feb 28th
Zone 11b	—	Oct 1st	Nov 30th – Feb 28th
Zone 12a	—	Oct 1st	Nov 30th – Feb 28th
Zone 12b	—	Oct 1st	Nov 30th – Feb 28th
Zone 13a	—	Oct 1st	Nov 30th – Feb 28th
Zone 13b	—	Oct 1st	Nov 30th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	45
Min Night Temp (°F)	28
Harden Off (days)	5

Culinary Notes

Chef's Note

Heshiko’s tender hollow stalks keep their crispness, so you get real crunch—not limp onion—when heat hits fast. Use it where you want a gentle allium lift: raw on top for perfume or tossed at the end so the bite stays clean and bright.

Best Uses

flash-stir-fry with hot oil so the tops stay crisp
quick sauté for noodle bowls—tenderize without turning sulfurous
soy-ginger pan sauce where the stalks act like edible straws
raw garnish for noodle soups and rice bowls—cool, snappy, fragrant

Flavor Profile

sweet, green onion perfume crisp, hollow stalk snap mild, clean allium flavor with gentle bite cuts through with a light, juicy finish

Kitchen Pairings

soy sauce ginger sesame oil rice vinegar garlic noodles

Frequently Asked Questions

What pest or disease most commonly affects Allium fistulosum (heshiko bunching onions), and how can I prevent and treat it?

Watch for onion thrips and leaf blight (often encouraged by warm, humid foliage). Keep plants spaced for airflow, avoid wetting the leaves when watering, and remove yellowing or spotted leaves early. If you see active thrips or heavy spotting, treat with an insecticidal soap for thrips and remove infected foliage promptly to slow spread.

How often should I water Allium fistulosum during the main growing phase, and what soil moisture level should I maintain?

During active leaf growth, keep the soil consistently evenly moist but not waterlogged—aim for top 1–2 inches of soil to be lightly moist, not soggy. In warm weather, this usually means watering about 2–3 times per week, adjusting for your soil and rainfall. Mulch helps stabilize moisture so the leaves stay tender and steady in growth.

How can I tell when heshiko bunching onions (Allium fistulosum) are ready to harvest?

Harvest when plants have formed a dense clump of hollow green leaves and the leaves are roughly finger-length and sturdy, typically around 60 days from sowing. For bunching, pull or cut outer leaves first for ongoing harvests, leaving the inner growth to continue. If you wait until leaves are very thick and the clump looks crowded, you’ll reduce tenderness—so harvest at peak green growth.