Allium drummondii
Drummond's onion
South-central United States and northern Mexico
Overview
Allium drummondii is a bulb-forming perennial in the family Amaryllidaceae, growing 4-12 inches (10-30 cm) tall from a small egg-shaped bulb. Two to six narrow, channeled, grass-like leaves rise from the base, often curved and shorter than or about equal to the flowering stem. In spring a leafless stalk carries a rounded cluster (umbel) of 10-25 star-shaped flowers, each 0.25-0.4 inch (6-10 mm) across in white, pink, or rose-red, with a darker midvein on each petal. The whole plant smells of onion when bruised. After flowering it sets small black seeds and the leaves die back as the bulb goes dormant through summer heat. It grows on prairies, limestone glades, and dry rocky grassland, often in shallow, calcareous soil. As a spring ephemeral it disappears by midsummer, leaving bare ground. One limitation is this short above-ground season and small stature, which give it only a brief, low presence in plantings.
Native Range
Allium drummondii is native to the south-central United States and adjacent Mexico, centered on Texas, Oklahoma, and Kansas and reaching surrounding states. It grows on prairies, limestone outcrops, and dry grassland.Suggested Uses
Allium drummondii is used in rock gardens, prairie and meadow plantings, and native or pollinator gardens on dry soil. Its small spring umbels suit the front of beds and gravelly slopes. The brief season and summer dormancy make it a companion to later plants rather than a season-long feature.How to Identify
Appearance
Size & Dimensions
Height4" - 1'
Width/Spread3" - 6"
Bloom Information
Flowering occurs in spring, generally March to May depending on latitude and rainfall. Each umbel opens over one to two weeks. Seed ripens by early summer as the foliage withers and the bulb enters dormancy.
Detailed Descriptions
Flower Description
white to rose-redFoliage Description
greenGrowing Conditions
Sun Requirements
Requires 6-12 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
Allium drummondii grows in full sun on dry, well-drained, often limestone-based soils and tolerates poor, shallow, rocky ground. It needs moisture during spring growth and dry conditions through its summer dormancy, rotting in wet soil. Bulbs are hardy and withstand drought, heat, and cold once dormant. It spreads slowly by offset bulbs and by seed. Established clumps need no fertilizer or routine care. Foliage left to die back naturally feeds the bulb for the next season.Pruning
No pruning is needed beyond removing spent flower stalks if self-sowing is unwanted. The leaves are left in place until they yellow and wither, which replenishes the bulb. Plants disappear below ground by summer.Container Growing
✓ Suitable for container growing