Salvia uliginosa

Bog sage

Reader rating

From 2 ratings

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Key information

Plant type

Tender perennial

Flower colour





Half hardy

Skill level


photo by Neil Holmes, copyright GAP Photos (31219)

Plant details

This salvia is a tall plant for the back of a sunny border, flowering in late summer and autumn. The flowers, almost turquoise blue, appear in short spikes at the top of tall, almost leafless stems and appear to hover among other flowers. Each flower-head has only a few blooms open at a time, so the same heads keep flowering for several months by producing a succession of flowers. Take cuttings in late summer and early autumn to overwinter indoors as an insurance policy The Royal Horticultural Society has given it its prestigious Award of Garden Merit (AGM).

Family: Lamiaceae

Genus: Salvia

Species: uliginosa

Plant type: Tender perennial

Flower colour: Blue

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Moist, Sandy

Hardiness: Half hardy

Skill level: Experienced

Height: 200cm

Spread: 90cm

Time to take cuttings: August to September

Flowering period: August to October

Reader reviews


Although it is described above as a tender perennial and only half-hardy, I have kept mine in the garden, unprotected, through the last two extremely cold winters.


My one has been growing in our front garden for the last 5 years,and spreading. The frost has not deminished its growth. And it is loved by the Bees andwasps,ans Hoverflies.

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