How to Grow Yellow Whitlow Grass
Wikimedia Commons
Yellow Whitlow Grass
Draba aizoides
flowerDraba aizoides is a mat-forming alpine perennial with bright yellow flowers that bloom in early spring. This evergreen cushion plant grows low to the ground and is ideal for rock gardens, alpine troughs, and alpine house cultivation. It's valued by alpine gardeners for its reliable, cheerful displays and compact growth habit.
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Example Yellow Whitlow Grass timeline · Pittsburgh, PA (Zone 6b)
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Plant Yellow Whitlow Grass
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Yellow Whitlow Grass blooms
Mid-to-late summerBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-7; prefers cool alpine conditions
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Seed Germination
2-4 weeksTiny seedlings emerge with cotyledons and first true leaves. Growth is very slow.
Keep soil barely moist but never waterlogged. Provide cool conditions (55-65°F). Ensure excellent drainage. Light is required for germination.
Rosette Development
6-12 monthsPlant forms a tight rosette of small, lance-shaped evergreen leaves. Mat gradually expands.
Allow to establish in cool, well-draining conditions. Minimize water. Avoid high humidity. Slow growth is normal. Top-dress with gravel to prevent rot at crown.
Vegetative Growth
Several months to over a yearDense cushion or mat thickens and spreads outward. Foliage remains tight and compact.
Maintain excellent drainage. Light watering only when truly dry. No fertilizer needed; can cause lush growth prone to rot. Allow cool dormancy in winter.
Flowering
4-6 weeks (March-April in temperate regions)Short flower stems emerge from cushion, each topped with a small cluster of bright yellow, four-petaled flowers. Flowers appear in early spring.
Reduce watering slightly during bloom to encourage flower production. Provide full sun. Avoid overhead watering. Plants may take 2-3 years from seed to first bloom.
Seed Production & Dormancy
Variable; dormancy through summerFlowers fade and small seed pods develop. Plant enters semi-dormancy in summer heat.
Deadhead spent flowers unless collecting seed. Reduce water in summer. Ensure airflow to prevent rot. Collect seed pods when dry and brown.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Ensure excellent drainage; improve air circulation; avoid overwatering and high humidity; remove affected plants immediately
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Provide excellent drainage and airflow; avoid wetting foliage; remove affected leaves; may use sulfur or neem oil in severe cases
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and
Hand-pick; provide sandy mulch deterrent; use copper tape around pots; encourage natural predators
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Strong water spray; insecticidal soap; neem oil; remove heavily infested growth
Uses
Alpine rock gardening
CraftDraba aizoides is a classic alpine plant perfect for rock gardens, alpine troughs, and scree gardens where its compact cushion form and early yellow flowers create striking spring displays. [source]
Alpine house specimen
CraftPopular for alpine house and cold frame cultivation, allowing gardeners in warm climates to grow this cool-climate alpine. Containers provide excellent drainage control. [source]
Early nectar source
WildlifeThe bright yellow flowers provide early spring nectar for emerging bees and other pollinating insects when few other flowers are available. [source]
Container and trough cultivation
HouseholdIdeally suited to hypertufa troughs, alpine pans, and pots where drainage can be precisely controlled and the compact plant display can be appreciated up close. [source]
Collector's alpine plant
CraftValued by serious alpine plant enthusiasts and botanical collectors for its reliable performance and genetic interest as a species with multiple subspecies and cultivars. [source]
Harvest Tips
This is an ornamental alpine plant, not harvested for food or fiber. Deadhead spent flowers to promote tidiness and encourage continued blooming. Collect seed pods in late spring when they turn brown and dry; store in cool, dry conditions. Can be propagated by division of mature plants in spring.
Fun Facts
- 🌱 Draba aizoides is native to the mountainous regions of central and southern Europe, thriving at high elevations where cool temperatures and excellent drainage are natural.
- 🌱 The genus Draba contains over 300 species distributed across the Northern Hemisphere and high mountains, making it one of the largest genera in the Brassicaceae family.
- 🌱 The common name 'Whitlow Grass' comes from its historical use in folk medicine to treat whitlows (festering infections around fingernails), though this use is not scientifically validated.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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