VegetableOnion
Red Beard Onion
Bunching Onion
Red Beard Onion is a Japanese bunching onion that delivers tender, mild flavor in just 40 to 50 days, making it one of the fastest onions to harvest. This open-pollinated heirloom thrives across zones 2 through 9, reaching 18 to 24 inches tall with distinctive red stalks that give the variety its striking name. Whether grown as an annual or perennial, it adapts beautifully to gardens, raised beds, and containers, offering fresh market growers and home gardeners alike an easy, reliable crop.
Photo © True Leaf Market
Growing Conditions
USDA Zone
2-9
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained, Fertile Loam; Tolerates Moderate Fertility
Preferred Temp55-75°F
Growth Stats
24 in
Height
—
Width
2 in
Spacing
40–49
Days to Harvest
PeriodAnnual
TypeHerbaceous
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
2-9
Size
24in H x ?in W
Growth
Annual
Care
Moderate
Hover over chart points for details
Highlights
The red stalks are the real draw here, providing both visual interest and proof of maturity. Its mild flavor and tender leaves make it far more approachable than storage onions, harvested young and eaten fresh in salads, soups, or as a garnish. The speed to maturity at 40 to 50 days means you can plant it in spring and again in late summer for a nearly year-round supply, and it tolerates frost down to zone 2, so it shrugs off early and late season cold that would kill tender crops.
Common Uses
Red Beard Onion is eaten fresh, harvested young, and used whole or sliced into salads, soups, stir-fries, and Asian noodle dishes. The tender leaves and mild red stalks make it perfect for raw applications where you want onion flavor without heat. It's also an excellent choice for garnishing or adding to grain bowls where the visual appeal of the red color matters as much as the taste.
Growing Timeline
First Bloom
Late Spring
First Harvest
Mid-spring
Last Harvest
Early Fall
Care Instructions
Start Indoors
Start seeds indoors 4 to 6 weeks before your last spring frost. Sow at a depth of approximately 1/4 inch in seed trays at a temperature of 50 to 75 degrees Fahrenheit. Keep soil moist and provide bright light. Transplant seedlings outdoors once they are 3 to 4 inches tall and soil can be worked.
Transplant Outdoors
Harden off seedlings by exposing them to outdoor conditions for 7 to 10 days before planting out. Transplant after the last frost date when soil has warmed to at least 50 degrees Fahrenheit. Space transplants 2 inches apart in rows 15 inches apart. Plant at the same depth they were growing in containers.
Direct Sow
Direct sow seeds outdoors in spring as soon as soil can be worked, or in late summer for a fall harvest. Sow seeds 1/4 inch deep in rows 15 inches apart, then thin seedlings to 2 inches apart once they are 1 to 2 inches tall.
Harvesting
Red Beard Onion is ready to harvest 40 to 50 days after planting. Harvest by pulling individual plants or clumps from the soil when the red stalks are pencil-thin to slightly thicker. Early harvests yield tender, mild onions perfect for fresh use. You can harvest selectively, removing outer leaves and allowing the plant to continue growing, or pull the entire plant. For the mildest flavor, harvest in the morning after dew has dried.
Growing Calendar
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Companion Planting
Ecology & Traits
Edible
Scientific Classification
Allium L.
Family
Amaryllidaceae
Genus
Allium
Duration
Annual
Native Status
L48 (I)AK (I)CAN (N)
History & Origin
“Red Beard Japanese Bunching Onion carries the heritage of Japanese onion breeding, where bunching onions have been cultivated for centuries as everyday vegetables. This heirloom represents the preservation of that tradition by seed companies and gardeners committed to maintaining open-pollinated, non-GMO varieties. Its journey to Western gardens reflects growing interest in specialty bunching onions and the recognition that these tender, fast-maturing varieties offer something fundamentally different from the storage onions that dominate American agriculture.”