Western Marsh Marigold (Caltha Leptosepala) is a perennial herb in the Ranunculaceae family with moderate care difficulty. It requires high watering and full sun or partial shade light in USDA hardiness zones 3-7. This plant is toxic to cats and dogs — keep it out of reach of pets.

Caltha leptosepala is a perennial herbaceous plant native to western North America, known for its buttercup-like white flowers and basal leaves.

Western Marsh Marigold

Western Marsh Marigold

Caltha Leptosepala

Caltha leptosepala is a perennial herbaceous plant native to western North America, known for its buttercup-like white flowers and basal leaves.

Quick Facts

Type
herb
Lifecycle
perennial
Care Difficulty
Moderate
Water Needs
High
Light
Full Sun, Partial Shade
Hardiness Zones
3-7

Safety

⚠️
Not Pet Safe
⚠️
Not Child Safe
☠️
Toxic

Growing Conditions

Soil Types:loamy, peaty, moist, boggy
Indoor:No
Outdoor:Yes
Garden Use:groundcover, ornamental, pollinator attractor

Care Calendar

Monthly care tasks for Western Marsh Marigold

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Western Marsh Marigold
Western Marsh Marigold detail

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Taxonomy

Family:Ranunculaceae
Genus:Caltha