About
Indigo' is a lax herbaceous perennial with ovate leaves to 20cm in length, and erect stems bearing long terminal spikes of whorled, violet flowers with brownish-red calyces, in early summer.
About the genus
Salvia can be annuals, biennials, herbaceous or evergreen perennials, or shrubs. They have paired, simple or pinnately lobed, often aromatic leaves and 2-lipped flowers in whorls, forming simple or branched spikes or racemes
Growing conditions
SunlightFull sun
Soil typeChalk, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureWell-drained
AspectEast-facing, South-facing
ExposureExposed, Sheltered
UK hardinessH6
Plant details
Plant typeHerbaceous Perennial
HabitClump forming
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesMediterranean climate plants, City and courtyard gardens, Coastal, Cottage and informal garden, Wildlife gardens
Care notes
CultivationGrow in light, moderately fertile, humus-rich, moist but well-drained soil. Best in full sun but can tolerate light partial shade
PruningCut back flower spikes as they fade to prolong flowering
PropagationPropagate by seed in pots in a cold frame in spring
Pest resistanceGenerally pest-free
Disease resistanceMay be susceptible to honey fungus (rarely), powdery mildews, verticillium wilt and foot and root rots