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Caltha natans (Floating marsh marigold)

Beginner
skill rating
1 hour care
per year
0.3m
Max height
0.3m
Max spread
2-5 years
To maturity
Low
Toxicity

Plant details

Botanical name

Caltha natans

Other names

Floating marsh marigold

Genus

Caltha Caltha

Species

C. natans - C. natans is a deciduous, aquatic perennial with floating, rounded to heart-shaped, scalloped, bronze- olive-green leaves and tiny, white or pink flowers in summer.


Caltha natans is: Deciduous

Habit

Spreading

Toxicity

Contact with foliage may cause skin irritation. Unless cooked, all parts are poisonous if ingested.

Flower

White, Pink in Summer

Foliage

Olive green in Spring; Olive green in Summer; Olive green in Autumn

How to care

Watch out for

Pests

Generally pest free

Powdery mildew Powdery mildew

General care

Pruning

Cut back hard after flowering to encourage a second flowering in autumn.

Propagation

Sow seed in a cold frame in late summer or early autumn. Stand pots in 2-3cm of water. Usually germinates in 1-3 months. Divide in early spring or autumn.

Propagation methods

Division, Seed


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Where to grow

Caltha natans (Floating marsh marigold) will reach a height of 0.3m and a spread of 0.3m after 2-5 years.

Suggested uses

Wildlife, Waterside, Low Maintenance, Bog garden, Aquatic

Cultivation

Grow in moist or boggy, neutral to slightly acid soil in sun or partial shade. Can be grown at shallow pond margins in water no deeper than 60cm. Suitable for use in koi ponds.

Soil type

Loamy

Soil drainage

Moisture-retentive, Boggy damp conditions, Pond/In water

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Caltha natans

Other names

Floating marsh marigold

Genus

Caltha Caltha

Species

C. natans - C. natans is a deciduous, aquatic perennial with floating, rounded to heart-shaped, scalloped, bronze- olive-green leaves and tiny, white or pink flowers in summer.

Native to

Alaska, Canada

Foliage

Deciduous

Habit

Spreading

Toxicity

Contact with foliage may cause skin irritation. Unless cooked, all parts are poisonous if ingested.


Colour

Flower

White, Pink in Summer

Foliage

Olive green in Spring; Olive green in Summer; Olive green in Autumn


How to care

Watch out for

Pests

Generally pest free

Specific diseases

Powdery mildew

General care

Pruning

Cut back hard after flowering to encourage a second flowering in autumn.

Propagation

Sow seed in a cold frame in late summer or early autumn. Stand pots in 2-3cm of water. Usually germinates in 1-3 months. Divide in early spring or autumn.

Propagation methods

Division, Seed


Monthly care advice


Where to grow

Caltha natans (Floating marsh marigold) will reach a height of 0.3m and a spread of 0.3m after 2-5 years.

Suggested uses

Wildlife, Waterside, Low Maintenance, Bog garden, Aquatic

Cultivation

Grow in moist or boggy, neutral to slightly acid soil in sun or partial shade. Can be grown at shallow pond margins in water no deeper than 60cm. Suitable for use in koi ponds.

Soil type

Loamy

Soil drainage

Moisture-retentive, Boggy damp conditions, Pond/In water

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 4, Zone 3, Zone 2, Zone 1

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This plant likes... Garden match
Soil types: Loamy Tell us...
Soil drainage: Moisture-retentive, Boggy damp conditions, Pond/In water Tell us...
Soil pH: Acid, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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