How to Grow Draba (Whitlow Grass)
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Draba (Whitlow Grass)
Draba spp.
flowerDraba is a genus of small, hardy alpine and rock garden plants in the Brassicaceae family, known for their delicate clusters of white, yellow, or pink flowers. These low-growing, often mat-forming perennials are prized by rock gardeners and alpine enthusiasts for their early spring blooms and ability to thrive in challenging alpine environments. The name 'whitlow grass' refers to their traditional use in treating whitlows (finger infections).
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Example Draba (Whitlow Grass) timeline · Pittsburgh, PA (Zone 6b)
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Plant Draba (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 Draba (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 →Zones 3-7 are ideal; most species are extremely cold-hardy (zones 2-3) but struggle in hot, humid climates
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Get my Draba (Whitlow Grass) timeline →Growth Stages
Germination & Seedling
2-3 weeksTiny seedlings with cotyledons emerge 7-14 days after sowing (seeds need cold stratification or cool conditions). Very small, delicate rosettes form.
Keep soil moist but well-draining during germination. Provide cool temperatures (50-60°F). High light helps prevent damping-off. Ensure excellent air circulation.
Rosette Development
Spring through fall (or full first season)First year produces tight, low rosette of narrow, hairy or smooth leaves, often in a silvery-green color. Plant remains compact and low to ground.
Reduce watering once established. Allow soil to dry between waterings. Do not overwater. Provide excellent drainage and air circulation to prevent fungal issues.
Flowering
3-6 weeks (March-May depending on zone)Delicate, 4-petaled flowers in clusters (racemes) emerge on short stems above the rosette. Flowers are white, yellow, pink, or bicolored depending on species. Blooms typically appear in early to mid-spring.
Moderate watering during bloom. Do not fertilize—lush growth reduces hardiness. Deadhead spent flowers to encourage longer bloom and prevent excessive self-seeding, though some self-seeding is beneficial.
Seed Production & Summer Dormancy
Late spring through summer (4-8 weeks)After flowering, seed pods (siliques) form and mature. Plant transitions to semi-dormant state in summer, especially in warmer zones. Foliage may become less vibrant.
Allow some flowers to set seed for natural propagation. Reduce watering significantly in summer. Provide afternoon shade in hot climates. Avoid fertilizer and disturbance.
Winter Dormancy
Late fall through early spring (4-5 months)Plant enters full dormancy. Rosette may appear shriveled or partially evergreen, depending on species and climate. Many species retain some decorative value in winter.
Minimal watering needed. Protect from excessive moisture and poor drainage, which are more damaging than cold. No fertilizer. Mulch only if temperatures drop below -20°F; use grit rather than organic mulch to reduce rot risk.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or insecticidal soap if severe; row covers on young plants. Usually minor issue in rock gardens.
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(Powdery mildew, Botrytis spp.)
Ensure excellent air circulation. Do not overwater. Remove affected foliage. Fungicide spray only if severe; prevention is key.
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Remove by hand in cool, damp periods. Beer traps. Copper barriers around plantings. Encourage natural predators.
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Spray with water or insecticidal soap. Usually self-limiting in open rock garden settings.
Uses
Edible flowers and salad green
CulinaryDraba flowers are edible and add delicate, slightly peppery notes to fresh salads and garnishes. Some species' leaves can be eaten raw in salads with a mustard-like flavor typical of Brassicaceae family members. [source]
Traditional herbal remedy
MedicinalHistorically, Draba species were used in traditional medicine to treat whitlows (festering finger infections), skin conditions, and minor wounds. The name 'whitlow grass' derives from this medicinal association. [source]
Rock garden and alpine gardening
HouseholdDrabus are essential plants for alpine troughs, scree gardens, raised beds, and rock gardens, where their compact habit and minimal care needs make them ideal. They add early spring color and texture to alpine landscapes. [source]
Early season nectar source
WildlifeThe delicate flowers provide early spring nectar and pollen for bees, butterflies, and other pollinators when few other plants are blooming, making Draba valuable for pollinator gardens. [source]
Botanical illustration and seed collection
CraftDraba species are favored subjects for botanical artists and seed savers. Alpine plant enthusiasts actively collect and exchange seeds from different species and cultivars. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Drabus are primarily ornamental; harvest is not typical. For seed collection, allow flowers to mature into seed pods (siliques), then collect when pods turn brown and dry. Seeds can be stored for 2-3 years in cool, dry conditions. Deadhead spent flowers if you want to control self-seeding, or allow some pods to mature for natural propagation.
Fun Facts
- 🌱 Draba species are among the hardiest flowering plants in the world, with some species thriving in the Arctic and above 10,000 feet elevation; Draba nivalis is found in alpine and Arctic regions across the Northern Hemisphere.
- 🌱 The genus Draba contains over 300 species distributed worldwide, making it one of the largest genera in the Brassicaceae family; most are found in cool, mountainous regions.
- 🌱 Some Draba species have become model organisms in plant genomics research due to their small genome size and ability to complete rapid life cycles in cool conditions; their adaptations to harsh alpine environments continue to inform climate resilience studies.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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