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How to Grow Geranium baldense

Geranium baldense

Geranium baldense

flower

Geranium baldense is a hardy perennial alpine geranium native to the Alps, characterized by delicate pink or magenta flowers and deeply lobed foliage. This low-growing plant forms compact mounds and is well-suited to rock gardens, alpine troughs, and sunny borders. It blooms abundantly in summer and offers excellent drainage tolerance.

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Example Geranium baldense timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Geranium baldense

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. First Geranium baldense blooms

    Around Apr 25

    ≈ 8 days after planting

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

Growing Conditions

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Sun: Full sun, 6-8 hours daily; tolerates partial shade in hotter climates
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Water: Moderate watering; allow soil to dry between waterings. Drought-tolerant once established. Avoid waterlogging, especially in winter.
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Spacing: 12-15 inches
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Days to maturity: Plants flower within first season from transplants; typically 8-12 weeks from seed
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Planting depth: Surface sow seeds with light pressing; transplants at same depth as container

Soil

Type: Well-draining gritty or sandy loam, suitable for alpine conditions
pH: 6.0-7.0
Amendments:
Coarse sand or gravel for drainage Peat moss or compost for structure Perlite for aeration

Growing Zones

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Thrives in USDA zones 4-7, preferring cooler climates

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

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Growth Stages

1

Seedling

2-3 weeks

Tiny seedlings with first true leaves appearing; very delicate with minimal foliage

Keep soil consistently moist but not waterlogged; provide bright light; maintain temperatures 60-70°F for germination

2

Vegetative

4-6 weeks

Young plants developing deeply lobed foliage in compact mounds; no flowers yet

Provide full sun and well-draining soil; pinch tips to encourage bushiness; reduce watering frequency

3

Budding & Early Flowering

2-3 weeks

Flower buds forming at leaf axils; first delicate pink or magenta blooms appearing

Maintain consistent moisture without waterlogging; deadhead spent flowers to encourage continued blooming

4

Peak Flowering

6-10 weeks

Abundant small pink or magenta flowers covering the plant; full ornamental display

Deadhead regularly for prolonged flowering; reduce nitrogen fertilizer to avoid excessive leaf growth at expense of flowers

5

Seed Setting & Decline

4-6 weeks

Flowers fade; seed heads develop; foliage may yellow or become less vigorous

Allow some flowers to set seed for self-sowing; cut back lightly after flowering to maintain shape; prepare for dormancy in cold regions

Companion Planting

Plan your garden →

Plant with:

Sempervivum (Houseleek) Saxifraga (Saxifrage) Phlox subulata (Creeping Phlox) Dianthus (Alpine Pink) Armeria (Thrift) Sedum (Stonecrop) Veronica (Speedwell)

Avoid planting near:

Plants requiring frequent watering Tall plants that shade the geranium Heavy clay-loving perennials

Common Pests

  • Spray with water to dislodge; use insecticidal soap or neem oil if severe

  • Increase humidity; spray with water regularly; use miticide if infestation is heavy

  • and

    Remove by hand; create barriers with coarse sand or gravel around plants; use slug bait if necessary

  • Improve air circulation; remove affected foliage; apply sulfur powder or fungicide in humid conditions

Uses

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Alpine Rock Gardens

Ornamental

Geranium baldense is a classic alpine plant for rock gardens, troughs, and scree beds, providing delicate color and compact form. [source]

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Pollinator Attraction

Wildlife

The abundant small flowers attract bees, butterflies, and other pollinators, making it valuable for wildlife gardens. [source]

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Cut Flowers & Arrangements

Household

Delicate pink flowers are suitable for small fresh arrangements and cottage garden displays. [source]

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Dried Flower Arrangements

Craft

Flowers dry well and retain color, making them useful for dried arrangements and pressed flower crafts. [source]

Harvest Tips

Geranium baldense is ornamental; harvest flowers for fresh arrangements at peak bloom. Collect seeds in late summer by allowing some flowers to set seed; collect capsules when dry and brown. Self-seeds readily in suitable conditions.

Fun Facts

  • 🌱 Geranium baldense is named after Mount Baldo in northern Italy, where it naturally grows at high alpine elevations.
  • 🌱 Unlike tender zonal geraniums (Pelargonium), true geraniums like G. baldense are fully hardy perennials that survive freezing winters.
  • 🌱 The deeply lobed foliage of alpine geraniums is an adaptation to harsh mountain conditions, increasing surface area for photosynthesis in thin alpine air.

Gardening Terms

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

Deadhead Full Sun Germination Partial Shade Perennial True Leaves
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