Bloody Cranesbill (Geranium sanguineum)

Bloody Cranesbill

Geranium sanguineum

Its magenta blooms glow like crushed wine, a tough groundcover for sunny slopes. Herbaceous perennial; common name: Bloody Cranesbill.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; thrives in dry, sunny exposed slopes and rock gardens
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Watering Water deeply when top 2 cm of soil is dry; highly drought-tolerant once established
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Temperature Hardy to -20°C; withstands hot, dry summer conditions without significant stress
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Characteristics

  • Leaf: Deeply lobed palmate leaves with serrated edges, turning bronze-red in autumn
  • Flower: Bright magenta-pink 5-petaled blooms with subtle dark veining
  • Stem: Slender trailing stems that root at nodes to form dense, weed-suppressing mats
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Care Guide

Watering

Keep soil evenly moist during active growth; avoid waterlogging

Fertilization

Light, balanced feed once at emergence. Avoid high-nitrogen fertilizers to prevent leggy, floppy growth

Eggshell powder topdress:Crush dried eggshells to fine powder; sprinkle lightly on soil surface to reduce blossom end rot risk and improve soil drainage
Pruning
  • Deadhead spent blooms regularly to extend the flowering period
  • Trim back leggy stems in mid-summer to encourage compact, dense growth
  • Cut back foliage to ground level in late autumn to prepare for winter dormancy
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse reactions

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes gentility and true romantic devotion in Victorian floriography

Usage: Groundcover for rock gardens, border edging, and erosion control on slopes