About
Pasithea caerulea, the blue pasithea, is a semi-evergreen perennial to 80 cm with narrow, strap-shaped, green leaves. In early summer, star-shaped, deep-blue flowers are borne on tall, slender, branching stems. A beautiful and elegant plant for a sunny, well-drained, frost-free border.
About the genus
Pasithea are semi-evergreen perennials from Chile producing narrow leaves and star-shaped, deep-blue flowers on tall, slender stems. Grown in sunny, well-drained, frost-free borders.
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectEast-facing, South-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH5
Plant details
Plant typeHerbaceous Perennial
HabitClump forming
FoliageSemi evergreen
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesGravel garden
Care notes
CultivationThrives in fertile, free draining soil in full sun or light shade
PruningNo pruning required
PropagationPropagate by seed
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free