Allium, Potato Onion, Multiplier Onion, Hill Onion, Mother Onion, Pregnant Onion 'Yellow Potato'

Allium cepa var. aggregatum

Family: Alliaceae
Genus: Allium (AL-ee-um) (Info)
Species: cepa var. aggregatum
Cultivar: Yellow Potato



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:

Unknown - Tell us

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 has been said to grow in the following regions:

Springdale, Arkansas

West Fork, Arkansas

Glen Avon, California

Lakeland, Florida

Snellville, Georgia

Lexington, Kentucky

Grand Mound, Washington

Vancouver, Washington

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Gardeners' Notes:


On Jul 7, 2012, eukofios from Vancouver, WA (Zone 8b) wrote:

My great aunt Emma grew these in her yard, 55 years ago. Mine are from a seed / plant exchange. I've been growing them for about 10 years. I love the flavor - much more complex than most onions, raw or cooked. They are mild, not hot. I like them better than shallots. Planted in the fall, small ones grow into one or two large onions. Large is a relative term - they are about the size of an apricot or plum. Large ones split and become a half dozen or more small ones, the size of pearl onions. Thus, plant small ones to get big ones, and plant big ones to obtain small ones to plant for next year. It doesn't work out exact, so if starting entirely with small or entirely with large, they still become a mix of sizes. I almost decimated my crop when I could not get to them to weed, and... read more


On Sep 16, 2011, AnitTina from Eustis, FL (Zone 9a) wrote:

There are joesonions on ebay has them and 2 types of walking onions also


On Oct 16, 2010, texasflora_com from De Leon, TX (Zone 8a) wrote:

My grandparents always had these onions but I've been unable to acquire any so far, but I do have Egyptian walking onions to trade.