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Salvia uliginosa
bog sage
This towering beauty produces its clear blue flowers over a couple of months from midsummer - so it's perfect for adding...
2 litre pot
available to order from spring 2027
3 × 2 litre pots
available to order from spring 2027
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Plant description
This towering beauty produces its clear blue flowers over a couple of months from midsummer - so it's perfect for adding soft, unstructured height and colour to the back of the border. As its common name suggests, it is happiest in soils that are reliably moist but not waterlogged, and it prefers a sunny spot. The flowers mix well with most pinks, purples and plums, and they are also sought after by bees and butterflies.
Eventual height & spread
Flowering period
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
Plant features
Position
Full sun
Rate of growth
Fast-growing
Soil
Moderately fertile, moist, well-drained soil
Hardiness
Borderline hardy (will need protection in winter in colder areas)
How to care for Salvia uliginosa:
Plant in full sun in reliably moist, fertile soil. Improve the soil with compost before planting and water regularly during dry spells, particularly while plants are establishing.
This vigorous perennial produces masses of sky-blue flowers from summer into autumn. Remove spent flower spikes to encourage continued flowering and cut stems back in early spring as new growth emerges.
Apply a mulch of garden compost or well-rotted manure in spring to help retain moisture and maintain soil fertility. Although fully hardy, the top growth may die back in winter before regrowing from the base in spring.
This vigorous perennial produces masses of sky-blue flowers from summer into autumn. Remove spent flower spikes to encourage continued flowering and cut stems back in early spring as new growth emerges.
Apply a mulch of garden compost or well-rotted manure in spring to help retain moisture and maintain soil fertility. Although fully hardy, the top growth may die back in winter before regrowing from the base in spring.
Please note:
This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.
