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Key characteristics

Family: Geraniaceae
Height: 18 to 20 inches
Width: 18 inches
Flower color: Semi-double, deep blue to vibrant purple flowers
Foliage color: Deeply dissected, dark purple to dark green leaves
Bloom time: Late spring to early autumn (June to October)
Light: Full sun to partial shade
Water: Moderate
Maintenance: Low; deadheading spent flowers encourages continuous blooming; disease-resistant
Growing zone: USDA Zones 4 to 8
Wildlife: Attracts bees and other pollinators

Groundcovers

Geranium pratense 'Storm Cloud'

Storm Cloud Cranesbill

Geranium pratense 'Storm Cloud' is a compact, clump-forming deciduous perennial with deeply divided, dark green foliage tinged with purple hues. In early to late summer, it produces semi-double, deep blue-purple flowers with a dark red frill, held on strong stems above the foliage.

This cultivar is noted for its strong growth, resistance to slugs and mildew, and ability to flower from the end of May with a second flush later in the season.

Light

Full sun to partial shade

Water

Moderate

Bloom time

Late spring to early autumn (June to October)

Find this plant

Works well in

Cottage Gardens
Borders
Pathways & Walkways
Pollinator Gardens

Companion plants

Candytufts · Ninebark · Peonies · Blue fescues · Stonecrops · Ornamental onions

Design tip

Repeat this richly colored geranium through sunny borders to establish rhythm while echoing its deep foliage tones across the landscape. Pair with lighter foliage and upright flowering companions to create contrast, depth, and a balanced display from late spring into autumn.