Salvia ‘Amistad’ UK: Growing Guide and Care Advice

Salvia 'Amistad' UK rich purple-violet flowers on tall stems in full summer bloom — Middleton Nurseries

Salvia Amistad UK is one of the most spectacular salvias you can grow — large rich purple flowers on vigorous plants reaching 120–150cm, flowering from late May to October. Despite being widely sold as a hardy perennial, Salvia ‘Amistad’ is tender in most UK gardens and needs overwintering from cuttings or under cover to perform reliably year after year.

TL;DR — Quick Summary

  • Salvia Amistad UK is one of the most spectacular salvias you can grow — large rich purple flowers on vigorous plants reaching 120–150cm, flowering from late May to October
  • RHS Plant of the Year 2013 — but widely misunderstood as hardy when it is tender in most UK gardens
  • Treat as tender: take cuttings in August or move under cover before first frost for reliable results
  • One of the longest-flowering salvias available — May to October bridges early summer through to late autumn
  • Exceptional pollinator value across the whole season for both bees and butterflies

Quick Facts

ParentageGuaranitica hybrid — exact parentage debated
HardinessRHS H2–H3 — tender; NOT reliably hardy in most UK gardens
Common mistakeBeing sold and planted as a hardy perennial when it isn’t
Flowering seasonLate May to October — one of the longest salvia seasons
Height120–150cm in good conditions
PositionFull sun, sheltered, free-draining
OverwinteringTake cuttings in August OR move under cover before first frost
AwardsRHS Plant of the Year 2013

The most important thing to know about Salvia 'Amistad' UK: it is tender, not hardy, despite being widely sold and planted as a hardy perennial. This single misconception accounts for the majority of Amistad losses in UK gardens every winter. In the most sheltered, south-facing gardens in the south and west it sometimes survives a mild winter with a very heavy mulch — but this is not reliable, and in most UK gardens it needs treating as tender.

Once you know that, everything else about Amistad is uncomplicated. It’s vigorous, floriferous, spectacular in late summer, and straightforward to overwinter from cuttings. It deserves its RHS Plant of the Year 2013 title — you just need to manage it correctly.

Salvia ‘Amistad’ UK Key Facts

🌸 Parentage

Parentage debated — widely considered a guaranitica hybrid. Growing requirements and habit place it firmly in the tender guaranitica group for practical purposes.

❄ Hardiness

RHS H2–H3 — tender in most UK gardens. Despite widespread sale as a garden perennial, treat as tender. Take cuttings in August for reliable overwintering. See our cuttings guide.

🌸 Flowers

Large, rich purple-violet flowers with distinctive dark calyces. One of the most vivid and eye-catching of all salvia flowers — RHS Plant of the Year 2013 for good reason.

📅 Season

Late May to October — one of the longest seasons of any salvia. Considerably earlier to flower than most guaranitica varieties, bridging the gap between spring and late-summer performers.

⬆ Height

120–150cm in a good growing season with shelter and rich soil. May need staking in exposed positions. One of the tallest salvias suitable for UK gardens.

🌿 Pollinators

Exceptional — both the season length (May to October) and the flower architecture make it one of the most valuable salvias for bees. The long tubular flowers suit long-tongued bumblebees. See our pollinator guide.


Growing Salvia ‘Amistad’ UK

Salvia Amistad UK requires full sun, a sheltered position and free-draining soil. It rewards generous growing conditions — unlike the drought-tolerant nemorosa group, Amistad benefits from rich soil, consistent moisture and feeding through the season. Feed fortnightly with high-potash liquid fertiliser from May to September. Water regularly, particularly in the first season and for container-grown plants in hot weather.

In the ground, plant in a sheltered position against a south or west-facing wall for maximum warmth and frost protection. In containers, use a free-draining mix with 20% grit and move under cover before first frost. The RHS tender salvia guide confirms these requirements.


Overwintering Salvia ‘Amistad’ UK

✓ Reliable methods

  • Take semi-ripe cuttings in August — roots in 3–4 weeks, overwinter on frost-free windowsill. Full process: cuttings guide
  • Move pot-grown plants under cover before first frost — cut back by a third, keep barely moist
  • In the most sheltered southern gardens: very deep mulch (15cm+) over crown, leave stems on for insulation

✗ Common mistakes

  • Treating as hardy — it is not reliably hardy in most UK gardens
  • Cutting back in autumn before moving under cover
  • Leaving in the ground without any protection in exposed or northern gardens

Best Companions for Salvia ‘Amistad’

Verbena bonariensis

The classic tall partner — both reach similar heights and the airy verbena stems complement Amistad’s bold upright habit without competing.

Pennisetum ‘Hameln’

The bottlebrush heads of Hameln grass echo the shape of Amistad’s flower spikes and the golden autumn colour provides contrast as Amistad peaks.

Echinacea purpurea

Flowers simultaneously with Amistad in late summer. The open horizontal heads contrast with Amistad’s upright spikes and attract a broad range of pollinators.

Agapanthus

The drumstick heads at a similar height provide structural contrast. Cool blue agapanthus alongside deep purple Amistad is a particularly effective late-summer combination.

Salvia nemorosa 'Caradonna'

Plant nemorosa at the front to bridge the gap before Amistad gets going. Both are purple-toned; the colour scheme is cohesive while the scale contrast provides drama.

Dahlia

Bold, rich-coloured dahlias share Amistad’s tender status and similar growing requirements. Deep red, coral or orange dahlias create striking contrast with Amistad’s purple.

Browse our salvia range

Salvia Amistad UK is one of the most rewarding salvias you can grow when treated correctly. Browse our full salvia range at Middleton Nurseries — every plant labelled with its hardiness and care requirements.

Browse all salvias →

Frequently Asked Questions

Salvia Amistad UK is tender — rated RHS H2–H3 — despite being widely sold and planted as a hardy perennial. In the most sheltered, south-facing gardens in the south and west of the UK it sometimes survives a mild winter with a very generous mulch, but this is not reliable. In most UK gardens, and particularly in any exposed or northern location, treat Amistad as tender: take cuttings in August or move pot-grown plants under cover before the first frost. See our overwintering guide at middletonnurseries.co.uk/overwintering-salvias-uk/.
The most reliable method for overwintering Salvia Amistad UK is to take semi-ripe cuttings in August — they root in three to four weeks and overwinter easily on a frost-free windowsill. Young rooted cuttings are far easier to manage over winter than large established plants and give you more plants for the following season. For pot-grown plants, cut back by a third and move under cover before the first frost. Full step-by-step instructions at middletonnurseries.co.uk/how-to-take-salvia-cuttings/.
Salvia Amistad UK won the RHS Plant of the Year award in 2013 and has remained one of the most searched salvia varieties ever since. Its combination of exceptionally long flowering season (late May to October), large vivid purple flowers, strong vigour and outstanding pollinator value makes it genuinely exceptional. The main caveat is that it’s widely sold as hardy when it’s not — gardeners who know it’s tender and manage it accordingly find it one of the most rewarding plants in the garden.
Salvia Amistad UK flowers from late May right through to October — one of the longest seasons of any salvia. This is considerably earlier than most guaranitica varieties, bridging the gap between early summer plants and the late-season specialists. Peak flowering is July to September. Regular deadheading extends the season and maintains the plant’s appearance. The long season makes it one of the most valuable plants in the garden for both display and pollinator support.
Salvia Amistad UK reaches 120–150cm in a good growing season with shelter, rich soil and consistent watering. This makes it one of the tallest salvias suitable for UK gardens and ideal for the back of a border or as a dramatic statement plant in a large container. In exposed positions or poor, dry conditions it may reach only 80–100cm. Taller plants may need staking in exposed positions — place a grow-through support in spring before growth becomes top-heavy.
Salvia Amistad UK combines particularly well with verbena bonariensis at similar height, Pennisetum Hameln grass for autumn contrast, echinacea for simultaneous late-summer colour, and agapanthus for a cool blue and deep purple combination. At the front, Salvia nemorosa ‘Caradonna’ bridges the gap before Amistad gets going in early summer and maintains a cohesive purple colour scheme. Bold dahlias in deep red, coral or orange create high-contrast combinations. See our companion planting guide at middletonnurseries.co.uk/salvia-companion-planting-uk/.

Join the Gardening Club

Early access to rare salvias, exclusive offers and growing tips from John and James — direct to your inbox.

Shop related plants

Join the Middleton Gardening Club

Stay in the loop with exclusive promotions, news, and updates. Sign up now and enjoy 10% off your next order