Eryngium paludosum
Eryngium paludosum
Swamp eryngo
★
Common Names
Swamp eryngo
Context
nativeRegion
Wet meadows, marshes, and riverbanks of western Europe and North Africa.
usdaZones
6–9
companionPlants
Caltha palustris, Iris pseudacorus, Carex spp.
culturalUses
Valued in bog gardens and naturalistic plantings for its unique structure and pollinator attraction.
Care
Care Requirements
LightFull sun to partial shade.
WateringKeep soil consistently moist; does not tolerate drought.
SoilPrefers rich, humusy, and wet soil; thrives in marshy or boggy conditions.
FertilizerLight feeding with balanced fertilizer in spring; avoid excessive nutrients.
HumidityHigh humidity is beneficial; avoid dry environments.
TemperatureCool to mild climates; not tolerant of extreme heat or prolonged frost.
Growth & Life Cycle
HabitHerbaceous perennial with upright stems and spiny, dissected foliage.
Mature Size30–70 cm tall and spreading in clumps.
Growth RateModerate growth rate.
BloomingLate spring to late summer; produces pale blue to white thistle-like flower heads.
DormancyWinter dormancy; foliage often dies back to ground level in cold regions.
Propagation
MethodsSeed, Division
DifficultyModerate; seeds require stratification and divisions should be handled with care.
Best SeasonEarly spring for division; late summer to fall for seed sowing.
Maintenance & Notes
PruningRemove spent flower stalks and dead foliage in fall or early spring.
RepottingRarely needed; prefers to be left undisturbed once established.
Pests & DiseasesOccasional aphids, slugs, and root rot in overly wet conditions.
ToxicityNo significant toxicity reported; considered non-toxic.
Recent Public Plants
No public plants yet.