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How to Grow Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear

Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear

Cerastium alpinum var. roseum

flower

A delicate alpine perennial groundcover with soft, silvery-green foliage and pale pink to rose-colored flowers. Native to high-altitude regions of Europe, this charming plant typically grows 4-6 inches tall and spreads to form low mats. It is valued in rock gardens and alpine troughs for its attractive flowers and compact habit.

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Example Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear blooms

    Around Jul 16

    ≈ 90 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Alpine Mouse-Ear Chickweed, Rosy Mouse-Ear dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to light shade, 6+ hours of direct sunlight daily
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Water: Low to moderate water needs; drought-tolerant once established. Water sparingly during growing season. Avoid waterlogged conditions, especially in winter. Benefits from good air circulation to prevent fungal issues.
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Spacing: 8 inches
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Days to maturity: 90-120 days from seed to flowering
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Planting depth: Surface sow or barely cover seeds; requires light to germinate

Soil

Type: Well-draining, gritty, sandy or gravelly soil
pH: 6.0-7.0
Amendments:
Gravel or coarse sand for drainage Perlite or pumice Minimal compost or organic matter to avoid excessive nitrogen

Growing Zones

Find your zone →

Thrives in zones 3-7, preferring cool climates with moderate summers

3a 3b 4a 4b 5a 5b 6a 6b 7a

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Growth Stages

1

Germination & Seedling

2-3 weeks

Tiny seedlings emerge with small cotyledons and fine, hairy foliage. Very delicate at this stage.

Keep soil moist but not wet. Provide bright, indirect light. Ensure good air circulation to prevent damping off. Do not fertilize.

2

Vegetative Growth

4-6 weeks

Young plants develop characteristic silvery-gray, hairy leaves in a low rosette or mat. Foliage becomes more robust and dense.

Maintain moderate, infrequent watering. Avoid overwatering. Do not fertilize; alpine species thrive in poor soil. Thin seedlings if overcrowded.

3

Budding & Flowering Preparation

3-4 weeks

Compact mats thicken and flower buds begin to form at stem tips. Plant growth slows as energy diverts to flowering.

Continue sparse watering. Reduce watering frequency as flower buds develop. Do not disturb roots. Light staking may help in humid areas.

4

Flowering

6-10 weeks (spring to early summer)

Delicate pink to rose-colored flowers bloom abundantly on short stems above the foliage. Flowers are typically single, 5-petaled, and appear in clusters.

Maintain cool conditions if possible. Water at soil level only. Deadhead spent flowers to encourage extended bloom. Ensure excellent drainage and air movement.

5

Seed Development & Dormancy

4-6 weeks, transitioning to dormancy

Flowers fade and small seed capsules develop. Foliage may persist year-round in suitable climates or decline in very hot summers.

Allow some flowers to remain for seed production if desired. Reduce watering significantly. In hot climates, may enter semi-dormancy in summer. Protect from winter wet more than cold.

Companion Planting

Plan your garden →

Plant with:

Saxifrage (Saxifraga species) Sedums (Sedum species) Alpine phlox (Phlox subulata) Armeria (Armeria maritima) Campanula (Campanula species) Sempervivum (Sempervivum species) Alpine forget-me-not (Myosotis alpestris)

Avoid planting near:

Aggressive spreaders or tall plants that shade Plants requiring rich, moist soil and high fertility Species susceptible to the same fungal diseases (e.g., other Cerastium species in very humid conditions)

Common Pests

  • Ensure excellent air circulation. Avoid overhead watering. Remove affected foliage. Apply sulfur dust or neem oil if severe. Alpine roses and Mouse-Ears are generally resistant if drainage and airflow are good.

  • and

    Remove by hand at night. Create a gravel mulch barrier (slugs avoid sharp surfaces). Avoid excessive moisture. Beer traps or copper tape may help in damp regions.

  • Often minor; wash off with strong water spray. Remove affected plant parts if severe. Rarely requires chemical intervention on hardy alpines.

Uses

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Alpine & Rock Garden Specimen

Ornamental

Prized for rock gardens, alpine troughs, scree beds, and border edging where its silvery foliage and pink flowers provide delicate color and texture. Its low-growing, spreading habit makes it ideal for crevices and raised beds. [source]

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Pollinator Support

Wildlife

Attracts small bees, hoverflies, and other early-season pollinators. The flowers provide nectar in spring when food sources are scarce for emerging beneficial insects. [source]

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Ground Cover & Groundscape Design

Craft

Used to create silvery-pink carpet effects in xeriscapes, alpine gardens, and drought-tolerant landscapes. Its compact size and mat-forming growth make it excellent for filling gaps between stones and in alpine containers. [source]

💊

Traditional Alpine Herb

Medicinal

Historically used in Alpine folk medicine, though modern medicinal applications are limited. Contains compounds typical of Cerastium species that have been studied for potential astringent and 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

Cerastium alpinum var. roseum is an ornamental plant, not typically harvested for food or medicinal use. Flowers can be deadheaded to encourage continued blooming. Seed heads may be left to self-sow if desired. In spring, gently remove any dead foliage from the previous winter. Cut back lightly after flowering if plants become leggy (rare in good conditions).

Fun Facts

  • 🌱 The name 'mouse-ear' refers to the distinctive soft, hairy leaves that resemble a mouse's ears, a characteristic feature of Cerastium species.
  • 🌱 Alpine Mouse-Ear Chickweed is native to the Alps and other high-altitude European mountain ranges, where it thrives in harsh, rocky environments at elevations up to 13,000 feet.
  • 🌱 The rosy variant is less common than the white-flowered form (Cerastium alpinum var. alpinum), making it a sought-after collector's plant for alpine gardening enthusiasts.

Gardening Terms

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

Damping Off Deadhead Full Sun Perennial
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