Overview
Allium fistulosum 'Evergreen Hardy White' is a hardy perennial onion cultivar prized for its exceptional cold tolerance and continuous harvest potential. This robust plant produces thick, hollow, cylindrical leaves that emerge from underground bulbs in dense clumps, reaching 18-24 inches in height. The foliage is blue-green in color with a distinctive white base that extends well up the stem, giving this cultivar its characteristic appearance. Unlike common storage onions, Allium fistulosum 'Evergreen Hardy White' forms minimal bulb development, instead focusing energy on producing tender, flavorful stems and leaves.
The plant produces small, spherical white flower heads on tall stalks in late spring to early summer if allowed to bolt. However, most gardeners harvest the stems before flowering to maintain tenderness. This cultivar is particularly valued for its ability to overwinter in cold climates and provide fresh green onion flavor throughout the growing season.
Native Range
Allium fistulosum is native to Asia, particularly regions of China, Mongolia, and Siberia, where it grows in mountainous areas and grasslands with harsh winter conditions.Suggested Uses
Allium fistulosum 'Evergreen Hardy White' works well in vegetable gardens, herb gardens, and edible landscapes. Excellent for container growing, kitchen gardens, and succession planting for continuous harvest. The attractive foliage makes it suitable for ornamental borders and companion planting with other vegetables and herbs.How to Identify
Growing Conditions
Sun Requirements
• 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
Allium fistulosum 'Evergreen Hardy White' requires well-draining soil enriched with compost or aged manure for optimal growth. Water consistently to maintain soil moisture, especially during active growth periods, but avoid waterlogged conditions which can lead to bulb rot. Apply a balanced fertilizer monthly during the growing season, or side-dress with compost. This cultivar benefits from regular harvesting, which encourages continued production of tender new growth. Mulch around plants to retain moisture and suppress weeds, keeping mulch away from the base to prevent pest issues.Pruning
Allium fistulosum 'Evergreen Hardy White' should be harvested regularly by cutting outer leaves at ground level, leaving the center growth point intact for continued production. Remove flower stalks as they appear to maintain leaf tenderness and prevent the plant from going to seed. In late fall, trim back any damaged or yellowed foliage, but leave healthy green leaves intact as they provide winter protection for the plant.Pruning Schedule
J
F
M
A
M
J
J
A
S
O
N
D
fall
Maintenance Level
moderateContainer Growing
✓ Suitable for container growing