Mountain Marsh Marigold, White Marsh-Marigold
Caltha leptosepala

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Caltha (KAL-tha) (Info)
Species: leptosepala (lep-toh-SEP-a-la) (Info)

Category:

Alpines and Rock Gardens

Perennials

Ponds and Aquatics

Height:

under 6 in. (15 cm)

Spacing:

6-9 in. (15-22 cm)

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer

Foliage:

Herbaceous

Shiny/Glossy-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; stratify if sowing indoors

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Gardeners' Notes:

0
positives
1
neutral
0
negatives
RatingContent
Neutral

On Jul 6, 2011, Erutuon from Minneapolis, MN wrote:

Bought mountain marsh marigold raised by Rush Creek Growers. I was surprised and pleased that a local garden store would sell it. I saw it in the mountains last summer, and it was so cute that I wanted to grow it, but I thought I'd have to order it online.