Marsh Cranesbill (Geranium palustre)

Marsh Cranesbill

Geranium palustre

Its pink blooms paint wet meadows like scattered confetti. Herbaceous perennial wildflower; common name: marsh cranesbill.

Full sun
2–3/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in open damp meadow conditions; tolerates light shade in hot climates
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Watering Keep soil consistently moist; tolerates temporary waterlogging in natural wet habitats
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Temperature Hardy to -15°C; thrives in cool temperate conditions; avoid extreme heat above 28°C
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Characteristics

  • Leaf: Deeply lobed palmate leaves with serrated margins; bright medium green
  • Flower: Five-petaled pink blooms with darker purple veining; clustered at stem tips
  • Stem: Slender, hairy upright stems branching near the top
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Care Guide

Watering

Maintain consistent soil moisture; avoid drying out completely

Fertilization

Diluted balanced feed once monthly. Avoid high-nitrogen feeds to prevent excessive foliage growth over flowering

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to avoid nutrient burn
Pruning
  • Deadhead spent blooms to encourage extended flowering through mid-summer
  • Cut back foliage to ground level in late autumn after dormancy sets in
  • Thin overcrowded clumps every 2–3 years to improve airflow and reduce disease risk
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental wildflower for rain gardens; supports pollinators including bees and butterflies