Geranium maculatum

RHS Plant Profile
spotted cranesbill

Other common names

alum bloom, alum root, American kino root, chocolate flower, North American crowfoot, North American wild cranesbill, rock weed, sailor's knot, shame-face

Plants for pollinators
Herbaceous Perennial

An open, upright plant to 70cm tall, growing from a compact rootstock. Leaves are up to 20cm across with 5 or 7 deep divisions, sometimes with faint colour blotches. Flowers are upward-facing, usually pale mauve to pale pink with a white eye and faint veins. Flowering late spring to early summer and sometimes reblooming in autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Geraniaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Trailing
Genus
Geranium can be annuals, biennials and perennials, herbaceous or evergreen, with rounded, usually palmately lobed or divided leaves, and lax inflorescences of rounded, 5-petalled flowers
Name Status
Correct
Plant Range
E N America

How to Grow

Cultivation

Grow in moderately fertile, moist but well-drained soil in sun or partial shade

Propagation

Propagate by seed, basal softwood cuttings in early to mid spring or division in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Rock garden
  • Wildlife gardens
  • Wildflower meadow
  • Low Maintenance
  • Flower borders and beds
  • Ground cover

Pruning

Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers

Pests

May be susceptible to vine weevil, capsid bug and geranium sawfly

Diseases

May be susceptible to downy mildews and powdery mildews