Allium fistulosum 'Evergreen Hardy White'
Evergreen Hardy White Bunching Onion
Open-pollinated cultivar; A. fistulosum is native to China, Mongolia, and Siberia
Overview
Allium fistulosum 'Evergreen Hardy White' is Evergreen Hardy White bunching onion (Japanese bunching onion), a perennial non-bulbing scallion growing 18-24 inches (45-60 cm) tall and 12-18 inches (30-45 cm) wide in clumps. Blue-green hollow tubular foliage with white lower sheaths — the white base color is the cultivar's defining visual trait. The species is A. fistulosum (Japanese bunching onion / Welsh onion) — distinct from A. cepa (common onion). A non-bulbing type: harvested as scallions (green onions) — no bulb production. In the amaryllis family (Amaryllidaceae). Perennial in zones 3-9: overwinters and the clump divides, regrowing each spring. The cold-hardiest bunching onion cultivar commonly available. Evergreen in mild winters; tops die back in cold winters but roots survive and resprout. No day-length requirement for harvest (unlike bulbing onions). Open-pollinated: seed can be saved. Direct-sow early spring through fall. Succession-sow every 2-3 weeks for continuous supply. Shallow roots — consistent moisture required. All Allium contain thiosulfates: toxic to dogs, cats, and horses (Heinz body anemia). Deer-resistant. Full sun to partial shade. Growth rate is moderate.
Native Range
Open-pollinated cultivar. The species A. fistulosum is native to China, Mongolia, and Siberia.Suggested Uses
Grown in vegetable gardens, raised beds, and containers of at least 2 gallons (8 L). Perennial scallion — overwinters in zones 3-9 and regrows. Non-bulbing — no day-length requirement. Open-pollinated. Toxic to pets. Deer-resistant.How to Identify
Appearance
Size & Dimensions
Height1'6" - 2'
Width/Spread1' - 1'6"
Reaches mature size in approximately 1 years
Bloom Information
Flowers in the second year or if overwintered — white spherical umbels on hollow scapes. Flowering is undesirable in scallion production. Cut flower stalks at the base.Detailed Descriptions
Flower Description
White spherical umbels on a hollow scape — only if allowed to bolt; undesirable in scallion productionFoliage Description
Blue-green, hollow tubular, with white lower sheaths — the white base color is the cultivar's defining visual traitGrowing Conditions
Sun Requirements
Requires 4-10 hours of direct sunlight daily
• Full Sun: 6+ hours of direct sunlight
• Partial Shade: 3-6 hours of direct sunlight
• Full Shade: Less than 3 hours of direct sunlight
Care & Maintenance
Care Guide
Full sun to partial shade. Well-drained soil pH 6.0-7.0. Direct-sow early spring through fall. Perennial in zones 3-9 — overwinters and regrows. No day-length requirement. Shallow roots — consistent moisture. Succession-sow. All Allium toxic to pets. Deer-resistant.Pruning
Harvest by cutting at soil level or pulling. The clump divides and regrows. Cut flower stalks at the base if they appear. Trim damaged foliage in fall. In cold zones, tops die back but roots resprout.Pruning Schedule
J
F
M
A
M
J
J
A
S
O
N
D
fall
Maintenance Level
lowContainer Growing
✓ Suitable for container growing
Minimum container size: 2 gallons