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A picture of a Gentian Sage

Gentian Sage

Salvia patens

Also known as

Blue-Flowered Sage, Spreading Blue Sage, Blue Sage, Sage

Salvia Patens by (CC0)

Full Sun
Moderate care
Moderate watering


RHS hardiness


Minimum temperature

Expected size








3 years to reach maturity


  • spring
  • summer
  • autumn
  • winter

More images of Gentian Sage

A photo of Gentian Sage
A photo of Gentian Sage

Gentian Sage Overview

Salvia patens is a herbaceous perennial species that typically grows to around a metre in height. It produces oval to triangular leaves, these measure approximately 20cm in length. Flowers are showy and 2-lipped, around 5cm in length and these are bright blue in colour. It has a clumping habit and is half hardy, coping with temperatures as low as -5 degrees Celsius, plant in a position of full sun, in moist, well-draining soil for optimal growth. The cultivars Salvia patens 'Oxford Blue' and Salvia patens 'Royal Blue' were once though unique, however they are now considered synonymous with this species. This species has earnt a Royal Horticultural Society (RHS) Award of Garden Merit. It is also part of the RHS “Plants for Pollinators” initiative to showcase plants which support pollinator populations by providing ample amounts of nectar and/ or pollen. A great choice for encouraging pollinating insect wildlife into your garden!

Common problems with Gentian Sage

How to propagate Gentian Sage



Tubers may be overwintered in damp soil.


Basal cuttings or softwood cuttings are reccomended, the best time to take these is spring-early summer.


Division at any time.

Special features of Gentian Sage

Attracts butterflies

Attracts bees

Attractive flowers

Attracts useful insects

Other uses of Gentian Sage


Flowers - Sow Under Cover in May

Sow these seeds for late summer colour and to get an early start on next year.

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Blue Flowering Summer Plants

Love blue flower and looking for summer inspiration.

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