Caltha palustris var. polypetala

Also Known As

Caltha polypetala
Giant Marsh Marigold
Kingcup
Marsh Marigold

Plant type

perennial, aquatic

size

H: 12"-24"
W: 15"-24"

planting zones

4a-9b

More Options

Caltha palustris var. polypetala plant details

Caltha palustris var. polypetala is a broadleaf deciduous perennial aquatic with green foliage. In spring yellow flowers emerge. Features glossy texture. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun - dappled shade and standing water - high water. Does well in average, gritty and rich soil. A good option if you're seeking something humidity tolerant.

CHARACTERISTICS OF Caltha palustris var. polypetala

Plant type: perennial aquatic
Plant family: ranunculaceae
Foliage: deciduous green
Mature size: 15 IN - 24 IN - wide, 12 IN - 24 IN - tall
Flowers: yellow blooms in spring
Uses: bog garden, long-blooming, showy

GROWING CONDITIONS for Caltha palustris var. polypetala

USDA Zones: 4a - 9b
Sun exposure: sun - dappled shade
Watering frequency: standing water - high
Resistant to: humidity
Soil needs: average, gritty and rich

Nursery contributed plant descriptions

Marsh Marigold... the big version! Big leaves, big flowers! Glossy, rounded leaves come up in late winter, deep green with purple hues; the large golden yellow flowers come on in early spring. The plant stretches, yawns and reaches out to root with self layering stems. Makes a choice water plant and can be submerged... also wet areas, bogs – needs constant moisture and sun to light shade. We discovered this lovely and RARE plant at Heronswood (before the terrorist took it over).

By: Secret Garden Growers

Very early chrome-yellow blooms float above large, lush, glossy leaves that persist nicely into summer. Buoyant! 1 - 2' T & W Minimum temperature: -30°F