swamp marsh marigold 'Plena'
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Plena' is a strong-growing perennial, to 60cm tall, with creeping rhizomes and rounded, deep green leaves. Fully-double, deep yellow flowers, up to 8cm across, are produced on branched, upright stems in spring

Scientific classification
- Species
- swamp marsh marigold 'Plena' (Caltha palustris 'Plena')
- Genus
- Caltha
- Family
- Ranunculaceae
- Leaves are poisonous if ingested. Wear gloves and wash hands after handling
- Toxicity
- Aquatic · Bogs · Herbaceous Perennial
- Plant type
- 0.5-1 metres
- Height
- 0.5-1 metres
- Spread
- Deciduous
- Foliage
- Clump forming
- Habit
- Spring · Summer · Autumn
- Season of interest
- Full sun
- Sunlight
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- Ideal temperature
swamp marsh marigold 'Plena' pictures
Distribution of swamp marsh marigold 'Plena'
Distribution map
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Culture
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Toxicity
Leaves are poisonous if ingested. Wear gloves and wash hands after handling
Quick identification of swamp marsh marigold 'Plena'
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swamp marsh marigold 'Plena' care guide
- Roots sit in consistently shallow fresh standing water all growing season
- Watering
- Full sun
- Sunlight
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- Ideal temperature
Watering
Roots sit in consistently shallow fresh standing water all growing season
Fertilizing
Marginal aquatic plant tablet fertilizer monthly into mud substrate
Pruning
Cut back after flowering
Propagation
Propagate by division in late summer or early spring
Growing
Grow in an open site in rich boggy soil at the water's edge in full sun
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Common pests and diseases
Diseases
Powdery mildews may be a problem
Pests
Generally pest-free
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