Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 20. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc.
Sunset®: All zones
USDA: 3-9
Sun Exposure: Sun to light shade
Origin: Circumboreal Northern America (south to North Carolina, Tennessee, Iowa, Nebraska, and Oregon), Eurasia
Growth Habits: Perennial, 12 to 18 inches tall and wide (30-45 cm) rounded, heart, or kidney-shaped leaves 3 to 7 inches wide (7-17 cm)
Flowers: Yellow flowers
Watering Needs: Bog or marsh plant, needs a lot of water
Propagation: Division in early spring or summer, seeds
Robert H. Mohlenbrock @ USDA-NRCS PLANTS Database / USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester, PA.
The entire plant is poisonous.
Several cultivars are found in specialized nurseries:
- 'Alba', has white flowers
- 'Plena', has large double flowers and should be propagated vegetatively since it generally doesn't come true when sowed.
Blooming Habits:
Cup-shaped, waxy yellow flowers, in clusters of 1 to 7, 1 to 2 inches wide (2.5-5 cm), in early spring. They come on long stalks above the foliage.
Culture:
The Caltha dies to the ground by midsummer.
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