How to Grow Arctic Antennaria

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Arctic Antennaria

Antennaria dioica var. hyperborea

flower

Arctic Antennaria is a low-growing, mat-forming alpine perennial native to subarctic and arctic regions. It produces delicate, papery flower clusters in white or pale pink and features silvery-green, woolly foliage that hugs the ground. This hardy groundcover is valued for rock gardens, alpine troughs, and extreme climate gardening.

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Example Arctic Antennaria timeline · Pittsburgh, PA (Zone 6b)

Plant Arctic Antennaria
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
First Arctic Antennaria blooms
Around Aug 15

≈ 120 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Arctic Antennaria dates for your own zip code.

Growing Conditions

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Sun: Full sun to light shade, 6+ hours of direct sun daily

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Water: Very drought-tolerant once established; water sparingly. Prefers dry conditions and is susceptible to root rot in wet soil. Water mainly during establishment period.

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Spacing: 6-12 inches apart inches

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Days to maturity: 120-180 days to first flowering from seed

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Planting depth: Seeds: surface sown or lightly pressed into soil; do not cover. Transplants: plant at soil level.

Soil

Type: Well-draining, gritty, sandy or gravelly soil

pH: 5.5-7.0

Amendments:

Perlite or coarse sand for drainage Gravel or stone chips Minimal organic matter to prevent rot

Growing Zones

Find your zone →

Exceptionally cold-hardy, thrives in zones 1-4; tolerates extreme arctic and subarctic conditions

1a 1b 2a 2b 3a 3b 4a 4b

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Growth Stages

Germination

2-3 weeks

Tiny seedlings emerge with first true leaves; very small and delicate

Keep soil barely moist, not wet. Provide bright light. Protect from excess moisture which causes damping off.

Rosette Formation

4-8 weeks

Plant develops characteristic silvery-green, woolly basal rosette; low and compact growth habit

Allow soil to dry between waterings. Ensure excellent drainage. Minimal fertilizer needed.

Vegetative Growth

8-12 weeks

Mat expands slowly; foliage becomes denser and more silvery; plant establishes deep taproot

Reduce watering significantly. Avoid disturbance. Very drought-tolerant at this stage.

Flowering

4-6 weeks (late spring to early summer)

Delicate papery flower heads appear on short stems above the foliage; flowers are white to pale pink and clustered

Maintain dry conditions. Deadheading extends bloom but is optional as flowers are attractive when dry.

Seed Production & Dormancy

6-8 weeks through fall/winter

Flowers develop into fluffy seed heads; plant gradually enters dormancy as temperatures cool

Allow seeds to develop and self-sow if desired. Reduce water further as temperatures drop.

Companion Planting

Plan your garden →

Plant with:

Saxifraga Draba Silene acaulis (Moss Campion) Sempervivum Alpine phlox Armeria maritima Sedum

Avoid planting near:

Plants requiring rich, moist soil Moisture-loving perennials Tall aggressive growers that shade low plants

Common Pests

Improve air circulation, reduce watering, remove affected foliage. Apply sulfur fungicide if severe.
Ensure excellent drainage, avoid overwatering, use well-draining soil mix. Remove affected plants if fungus spreads.
Spray with water, apply insecticidal soap, or use neem oil if infestation occurs.

Uses

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Dried Flower Arrangements

Craft

The papery flowers dry beautifully and maintain their shape and delicate appearance for extended periods, making them ideal for dried arrangements and crafts. [source]

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Alpine Pollinator Support

Wildlife

Provides nectar and pollen for alpine and arctic bees, butterflies, and other pollinators in extreme climate zones. [source]

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Rock Garden & Alpine Landscaping

Household

Excellent groundcover for rock gardens, alpine troughs, scree gardens, and extreme climate landscapes requiring hardy, drought-tolerant plants. [source]

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Traditional Use in Arctic Medicine

Medicinal

Historically used in arctic and subarctic folk medicine by indigenous peoples; some research suggests potential anti-inflammatory properties. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Not typically harvested. For seed collection, allow flowers to dry completely, then gather fluffy seed heads before they disperse naturally. Seeds can be stored in cool, dry conditions for future sowing.

Fun Facts

🌱 Antennaria dioica var. hyperborea is one of the hardiest flowering perennials, naturally occurring in arctic tundra and high alpine regions across northern Europe, Asia, and North America.
🌱 The plant's silvery, woolly foliage reflects intense arctic sunlight and reduces water loss in extreme environments—adaptations that make it virtually impossible to overwater in normal garden conditions.
🌱 Some Antennaria species reproduce primarily through apomixis (asexual seed production), allowing them to colonize new areas without genetic recombination—a survival strategy in harsh climates with few pollinators.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Damping Off Deadhead Full Sun Perennial True Leaves

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