Allium Species, Japanese Bunching Onion, Scallion, Spring Onion, Welsh Onion

Allium fistulosum

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: fistulosum (fist-yoo-LOW-sum) (Info)
Synonym:Allium bouddae
Synonym:Allium kashgaricum
Synonym:Allium wakegi
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Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun

Sun to Partial Shade




Foliage Color:



18-24 in. (45-60 cm)


6-9 in. (15-22 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:

Pale Pink

Pale Yellow

White/Near White


Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

By tip layering

Seed Collecting:

Bag seedheads to capture ripening seed

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored


This plant is said to grow outdoors in the following regions:

Ranburne, Alabama

Seward, Alaska

Tucson, Arizona(2 reports)

Clovis, California

San Jose, California

Indianapolis, Indiana

Eveleth, Minnesota

Neptune, New Jersey

West Milford, New Jersey

, Newfoundland and Labrador

Portland, Oregon

San Antonio, Texas

Spokane, Washington

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Gardeners' Notes:


On Jan 10, 2015, Wisee from Batesville, AR wrote:

I've been experimenting with bunching onions to learn when is best to plant them as we live in the "intermediate" or mid-section of the US. I have yet to have success with bulb onions getting large enough to hold in the palm of your hand, so that leaves green bunching onions to try.
Of the three bunching onions I tried sowing directly this late summer/early fall (Evergreen Bunching, Southport 404, Lisbon), Evergreen Bunching sprouted the quickest. I also sowed Evergreen Bunching in a pot, which most every seed sprouted easily and they are currently overwintering in our green house until I can plant them in the garden as soon as we are no longer in the single and teen digits for overnight low temperatures.
One suggestion to get seeds to sprout in garden is to cover newly... read more


On May 7, 2009, love0gardening from West Milford, NJ (Zone 6a) wrote:

This is a great addition to the garden. They come back every year in zone 5, multiplying but not taking over, and have great flowers. I use them like scallions.


On Oct 21, 2004, trifunov from Brandon, MS (Zone 8a) wrote:

Sow from early spring to midsummer. In coastal areas can sow right through the winter. Germinate in 10-21 days. Thin to stand 3in apart when 1-2in high. Does not form bulbs (eat like a "Spring onion").


On Jul 29, 2004, kadawn74 from Portland, OR (Zone 8b) wrote:

These are so satisfying to grow, sprout quickly, and are easy to watch as they progress. I have been known to harvest one or two (or three) as early as 3 weeks. At that age they are tiny but just as tasty!