Ranunculus populago
Ranunculus populago
Marsh Marigold
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Taxonomy
Family Ranunculaceae · Genus Ranunculus
Common Names
Marsh MarigoldKingcup
Context
nativeRegion
Europe and parts of temperate Asia.
usdaZones
4–8
companionPlants
Caltha palustris, Hosta, Primula, Ferns
culturalUses
Primarily used in wildflower and bog gardens for landscaping; no major traditional uses due to toxicity.
Care
Care Requirements
LightPrefers partial shade to full sun.
WateringRequires consistently moist to wet soil; do not let dry out.
SoilThrives in rich, humus, slightly acidic to neutral soil with good drainage.
FertilizerApply a balanced, diluted fertilizer in early spring if soil is poor.
HumidityTolerates high humidity; appreciates moist environments.
TemperatureHardy to cold, temperate climates; tolerates frosts.
Growth & Life Cycle
HabitPerennial, herbaceous; forms low clumps.
Mature Size15–30 cm tall and wide.
Growth RateModerate growth rate.
BloomingFlowers in late spring to early summer with yellow blooms.
DormancyDormant during winter in colder regions.
Propagation
MethodsDivision, Seed
DifficultyEasy to moderate.
Best SeasonEarly spring for division; late summer to autumn for seeds.
Maintenance & Notes
PruningRemove dead foliage after flowering to maintain appearance.
RepottingNot typically necessary unless used in containers.
Pests & DiseasesGenerally pest-free; may occasionally suffer from leaf spots or powdery mildew if air circulation is poor.
ToxicityToxic if ingested; may cause skin irritation.
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