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Salvia guaranitica ‘Black and Blue’

In Stock • Dispatched from our nursery

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P9(9cm Pot)

1 Litre(13cm Pot)

3+ plants

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£30.00

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6+ plants

Most Popular!

£45.00

£58.00

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9+ plants

£60.00

£80.00

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*excludes new for 2026 varieties • to see a full list of excluded plants click here*

Exceptional plants, better value

Mix & match • Create your own combination

P9 (9cm)

1 Litre

3+ plants

£25.00

£30.00

Save 5%

6+ plants

Most popular!

£45.00

£58.00

Save 10%

9+ plants 

£65.00

£80.00

Save 15%

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Plant information

Plant Description

Salvia guaranitica ‘Black and Blue’ is one of the most striking salvias you can grow, famous for its intense cobalt‑blue flowers set against dramatic near‑black calyxes. These richly coloured, tubular blooms appear from mid‑summer through to the first frosts, creating a bold vertical presence that enriches borders, mixed beds, and large containers.

Often called Black & Blue Sage or Blue Anise Sage, this variety features aromatic green foliage that adds texture and a subtle garden fragrance whenever brushed. The long, erect flower spikes can reach impressive heights, making it a striking backdrop plant or a focal point at the rear of a sunny border.

One of the biggest attractions of Salvia guaranitica ‘Black and Blue’ is its ability to draw wildlife — bees, butterflies, and hummingbirds are particularly fond of its nectar‑rich blossoms, making it a brilliant choice for pollinator‑friendly gardens.

As a tender perennial, this New World sage thrives in full sun with well‑drained soil and appreciates some protection from severe frost in the UK to ensure strong regrowth. In milder areas or sheltered sites, it will often return year after year with a little winter mulch.

With its vivid colour, wildlife appeal, and dramatic form, Salvia guaranitica ‘Black and Blue’ brings unforgettable summer and autumn impact to sunny outdoor spaces.

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🌿 How to Care for Salvia guaranitica ‘Black and Blue’

How do I prune Salvia guaranitica ‘Black and Blue’?
Salvia guaranitica ‘Black and Blue’ should be left through the winter, as the dead wood protects them from frost. They can be pruned in early spring, and more vigorous varieties may be trimmed again around June.
Salvia guaranitica ‘Black and Blue’ can be susceptible to aphids, capsid bugs, whitefly, sage leafhoppers, and glasshouse red spider mites. Additionally, fungal issues like grey mould (Botrytis) can develop in cool and damp conditions, especially during overwintering.
Water Salvia guaranitica ‘Black and Blue’ regularly during dry spells, particularly newly planted ones. Established hardy salvias are drought-tolerant but benefit from deep watering during prolonged hot periods. Avoid waterlogging, as it can cause root rot.
Salvia guaranitica ‘Black and Blue’ require light feeding in spring with a balanced slow-release fertiliser or compost. Tender salvias benefit from fertilisation every 2–4 weeks during the growing season using a liquid feed for flowering plants. Over-fertilising should be avoided, as it can encourage foliage growth at the expense of flowers.
Propagation of Salvia guaranitica ‘Black and Blue’is prohibited without a licence
Salvia guaranitica ‘Black and Blue’ should be trimmed around April or May, a technique often called the “Chelsea Chop,” once new shoots start to appear. Cut back to the fresh growth, and continue deadheading throughout the season. Vigorous varieties can be pruned again in July to encourage bushier, greener plants rather than tall, woody stems. Salvias should not be cut back in autumn, as leaving the foliage intact helps protect the plant from frost.
Salvia guaranitica ‘Black and Blue’ moderately drought-tolerant once established, thriving in well-drained soil and full sun. Tender salvias are less drought-tolerant and require more consistent watering.
Salvia guaranitica ‘Black and Blue’ performs well in UK gardens if given full sun and free-draining soil. It’s hardy in most areas, flowers for months in summer and autumn, and suits borders or containers. Avoid winter wet and prune lightly in spring.

All our salvia plants are grown in our specialist nursery in Staffordshire, UK, using high-quality peat-free compost. This ensures that every salvia you buy from us is healthy, well-established, and of the highest quality. Buy salvias online in the UK with confidence, knowing our plants are sustainably grown and carefully nurtured for excellent garden performance.

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