Caltha polypetala
Kingcup, Marsh marigold, Himalayan marsh marigold
- Height × spread
- 0.6m × 0.75m
- Position
- Full sun
- Hardiness
- Colder than -20C (RHS H7)
- Flowers
- Spring
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
Big rounded leaves that often curve upwards round the stout stem that supports it. They are lush and hoist themselves up from the boggy ground at their feet. The good sized cup-shaped flowers are rich gold and exuberant, a lovely feature in spring. The big leaves remain noticeable after the flowers are finished. This is really a plant for bogs or shallow water, though may grow in soil that is always moist. It is best suited to large ponds because it is so vigorous. It can be grown in a container in a small ornamental pond, but will need frequent division and repotting under these conditions.
- Flower colour
- Yellow
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Dome
- Height
- 0.6m
- Spread
- 0.75m
- Season of interest
- Spring
- Flowers in
- Spring
- Evergreen
- Deciduous
- Garden style
- Water garden
- Sun or shade
- Likes full sun, tolerates part shade
- Soil type
- Chalk, Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil
- Hardiness
- Colder than -20C (RHS H7)
- Borders & containers
- Borders
- Water depth
- Up to 2.5cm
- Hazards
- No
Spring
Spring · Outdoors
Feed with aquatic plant food
As the plant is grown in water, feed with an aquatic feed as directed on the packet. Do not exceed the amounts given as this can affect the water.
Spring-Autumn · Outdoors
Water frequently to keep the soil moist
The plant thrives in moist or boggy soil, doesn't tolerate dryness and should be watered frequently, not only after a period of drought, but if the soil begins to dry out spring to autumn. Check plants in pots more frequently, especially in hot weather.
Spring - early-mid · Planting
Divide when too large
The plant can be divided if it becomes too large or another plant is required. This may involve physically dividing the clump in two, removing offsets or small bulbs or dividing rhizomes. The new plants can be grown in pots or planted in the ground.
Planting & general
Compost · Planting
Compost for aquatic plants
Use aquatic plant compost for pond plants (other composts contain nitrates that cause problems in ponds). Pond plants are generally planted in baskets and weighted to keep in position.
Found in
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