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Plant data provided by Trefle.io and Perenual

HomePlant EncyclopediaRock crane's-bill

Rock crane's-bill

Geranium macrorrhizum

Also known as
  • Bigrooted Geranium
  • Bigroot Geranium
  • Bulgarian Geranium
  • big-rooted geranium
Geraniaceae
Perennial
Ornamental
Fragrant
Attracts pollinators

About this plant

Geranium macrorrhizum, known as rock crane's-bill, is a perennial ornamental plant that prefers full sun and medium watering. It is suitable for USDA zones 4-8 and grows to a height of 0.3-0.5 meters. This plant blooms with pink, magenta, and purple flowers from May to July and thrives in loamy, chalky, or sandy soils. It is fragrant, supports pollinators, is non-toxic, but not evergreen.

Light

Full sun

Watering

Medium water

Soil

Loamy, Chalky, Sandy

Height

0.3–0.5 m

Spread

0.4–0.6 m

Zones

4–8

Flower colors

Calendar
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Bloom Period
J
F
M
A
M
J
J
A
S
O
N
D
Bloom Period
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Growing Tips

  • Rock crane's-bill prefers full sun but can tolerate partial shade.
  • It is adaptable to various soil types, including loamy, chalky, and sandy soils, as long as they are well-draining.
  • Water moderately, especially during dry periods.
  • This is a hardy perennial suitable for USDA zones 4-8.
  • Deadhead spent flowers to encourage further blooming.

Fragrance and Pollinators

The plant is known for its fragrant foliage and flowers, and it is a good attractant for pollinators.

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Data source: Trefle.io, Perenual

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Related plant guides

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  • Full sun plants
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