About
A compact, tender, evergreen perennial often grown as an annual to 30cm tall and wide. Relatively large purple, star-shaped flowers to 3.8cm across with small yellow eyes are borne from late spring until the first frosts above the coarsely-lobed foliage.
About the genus
Isotoma can be annuals or perennials, with pinnately lobed leaves and long-tubed, salver-shaped flowers
Growing conditions
SunlightFull sun
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained, Well-drained
AspectSouth-facing, West-facing
ExposureExposed, Sheltered
UK hardinessH3
Plant details
Plant typeConservatory Greenhouse, Annual Biennial
HabitBushy
FoliageEvergreen
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height1-2 years
Suggested usesCity and courtyard gardens, Cottage and informal garden, Patio and container plants
ToxicitySkin irritant. Wear gloves and other protective equipment when handling
Care notes
CultivationGrow in any moist, free-draining soil in full sun
PruningDeadhead and trim as required
PropagationPropagate by seed or softwood cuttings
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free