How to Grow Ledum
Ledum
Ledum groenlandicum
shrubLedum, commonly known as Labrador tea, is a hardy evergreen shrub native to boreal and subarctic regions of North America. It produces small white or pinkish flowers and aromatic, leathery leaves that have been traditionally used for tea. The plant is valued for its ornamental appeal, hardiness, and ecological importance.
When should you plant Ledum in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Ledum timeline · Pittsburgh, PA (Zone 6b)
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Plant Ledum
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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Harvest Ledum
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Ledum dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 0-5, extremely cold-hardy; can grow in zone 6 in favorable conditions
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Get my Ledum timeline →Growth Stages
Seedling
2-3 monthsTiny seedlings emerge with cotyledons and first true leaves; very slow-growing initially
Keep soil moist; provide bright, indirect light; maintain cool temperatures; high humidity helpful; avoid transplanting until well-established
Vegetative Growth
1-2 yearsYoung plant develops multiple stems and characteristic leathery, linear leaves with aromatic properties; slow growth rate
Maintain consistent moisture; acidic soil essential; protect from harsh winds in early years; minimal pruning needed
Establishment
2-3 yearsShrub fills out, becoming more robust with deeper root system; begins to look more like mature plant
Reduce watering frequency as drought tolerance increases; fertilizer rarely needed; maintain acidic conditions
Flowering
3-4 weeksClusters of small white to pale pink flowers appear at branch tips, typically in spring to early summer
No special care needed; deadheading not necessary but can promote tidier appearance; flowers attract pollinators
Mature Shrub
Ongoing, 20+ years lifespanFully established shrub with dense branching, aromatic foliage year-round, and regular flowering; can reach 2-3 feet tall
Minimal maintenance; prune lightly to shape after flowering if desired; harvest leaves anytime for tea; extremely cold-hardy
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity; spray with water; use miticide if severe; ensure adequate airflow
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Remove by hand; spray with insecticidal soap; neem oil application
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Prune affected branches; horticultural oil spray during dormancy
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Improve air circulation; remove affected leaves; ensure soil drains well; fungicide if widespread
Uses
Labrador Tea Beverage
CulinaryThe aromatic leaves have been brewed into tea for centuries by indigenous peoples and settlers. The tea has a pleasant, slightly minty flavor with piney notes and was a traditional winter beverage in northern regions. [source]
Traditional Herbal Remedy
MedicinalLedum has been used in traditional medicine for respiratory health, digestive support, and as a diuretic. Some studies suggest compounds in the plant may have antioxidant and anti-inflammatory properties. [source]
Natural Dye and Fragrance
CraftThe aromatic leaves and stems have been used historically to create natural dyes and as an aromatic plant in household preparations and herbal crafts. [source]
Pollinator and Wildlife Support
WildlifeThe spring flowers attract bees and other pollinators, making Ledum valuable for supporting early-season pollinators in cold climates. The evergreen foliage provides shelter for wildlife. [source]
Ornamental Cold-Climate Landscaping
HouseholdWith its hardy nature, evergreen foliage, and delicate flowers, Ledum is excellent for native plant gardens, bog gardens, and cold-climate landscaping where few other ornamentals thrive. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Leaves can be harvested year-round for tea; pick fresh or dry for storage; best harvested in late spring through summer when flavor is strongest; avoid using old, brown leaves; traditionally harvested by hand, gathering the top young leaves and stems
Fun Facts
- 🌱 Ledum groenlandicum is one of the most cold-hardy shrubs in existence, thriving in temperatures that drop to -60°F or below
- 🌱 The plant's common name 'Labrador tea' comes from its historical use by indigenous peoples and settlers in Labrador, Canada, as an alternative to imported tea
- 🌱 Ledum leaves contain aromatic volatile oils that give the plant its distinctive spicy-mint fragrance; crushes leaves release an even stronger aroma
Gardening Terms
New to gardening? Learn about terms used in this guide:
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