Salvia nemorosa varieties are the backbone of any serious salvia collection. It’s fully hardy throughout the UK — including Scotland and exposed northern gardens — drought-tolerant once established, and one of the most pollinator-friendly plants you can grow in a summer border. It asks very little and gives a great deal in return.
The challenge, if you can call it that, is choosing between varieties. At Middleton Nurseries we grow one of the largest ranges of nemorosa in the UK, and the differences between varieties — in height, colour, stem colour, flower density and season length — are significant enough to matter when you’re planning a planting. This guide covers the key varieties across every colour group, with honest notes on what makes each one worth growing.
For the full RHS guidance on long-lived border salvias, including soil preparation and general care, the RHS growing guide is the definitive reference.
| Hardiness | Fully hardy — RHS H5 to H7, survives UK winters without protection |
| Position | Full sun; tolerates partial shade but flowers less freely |
| Soil | Free-draining; tolerates poor soil; dislikes heavy wet clay |
| Flowering | Early summer, with a second flush after cutting back |
| Height range | 20cm (Sensation series) to 90cm (taller border varieties) |
| Key care | Hampton Chop after first flush to encourage repeat flowering |
| Pollinators | Excellent — bees and butterflies in particular |
The classic border blues — from pale sky to near-black indigo
The heart of the nemorosa range. Colours range from pale sky-blue through to near-black indigo, and the differences are genuinely distinct rather than subtle.
Salvia nemorosa ‘Caradonna’
The definitive border salvia. Distinguished by near-black stems — the dark calyces persist long after the violet-blue flowers fade, extending the decorative season by weeks. Upright, architectural and reliably hardy. At 60–80cm it has real presence in a border without staking.
Salvia nemorosa ‘Mainacht’ (May Night)
One of the earliest to flower and one of the deepest in colour — a true rich indigo rather than violet-blue. More compact and bushy than ‘Caradonna’, particularly good in smaller borders where the height of ‘Caradonna’ would be too dominant.
Salvia nemorosa ‘East Friesland’ (Ostfriesland)
Rich purple flowers with a very dense flower spike. One of the longest-established nemorosa in cultivation and still one of the best. More bushy and spreading than the upright ‘Caradonna’ — useful for filling gaps at the front of a border.
Salvia nemorosa ‘Crystal Blue’
A distinctly paler variety — soft sky-blue rather than violet or indigo. Flowers earlier than most nemorosa. Works particularly well in silver and white planting schemes, or alongside pale yellow achilleas.
Salvia nemorosa ‘Salvatore Blue’
An intense deep blue — one of the most saturated colours in the nemorosa range. Good vigour, upright habit. A newer introduction that has established itself as a reliable performer in UK trials.
Soft warm tones that work beautifully alongside blues and silvers
Pink nemorosa has become increasingly popular — the warm tones contrast dynamically with the classic purple varieties and work beautifully alongside grasses and blues.
Salvia nemorosa ‘Pink Friesland’
The most established pink nemorosa and still the benchmark variety. Clear soft pink flowers on upright spikes with the same reliable hardiness and drought tolerance as the blue varieties. One of the best simple border combinations alongside blue nemorosa.
Salvia nemorosa ‘Caradonna Pink Inspiration’
A pink-flowered version of the iconic Caradonna, with the same near-black stems. The dark stems against pink flowers create a more dramatic effect than most pink nemorosa — slightly bolder and more architectural.
Salvia nemorosa ‘Rose Marvel’
Large rosy-pink blooms with good vigour and a long flowering season. Slightly taller than ‘Pink Friesland’. One of the best pink nemorosa for cutting as well as border display.
Salvia nemorosa ‘Feathers Flamingo’
A distinctive variety with looser, more open flower spikes — giving an airier, more naturalistic appearance. Flamingo pink that sits between soft and warm-toned, adaptable to both cool and warm planting schemes.
20–30cm — ideal for pots, containers and front-of-border
The Sensation series represents a significant development in nemorosa breeding — genuinely compact plants that behave like full-sized nemorosa in every other respect. Fully hardy, reliably repeat-flowering, available across the full colour range.
Salvia nemorosa ‘Sensation Compact Deep Blue’
The deepest blue in the Sensation series — a rich violet-blue with good flower density. One of the best container salvias available. Fully hardy so the pot can stay outside year-round.
Salvia nemorosa ‘Sensation Compact White’
Clean white flowers — unusual in the nemorosa range. Works well as a contrast plant in a blue and white scheme, or to lighten a predominantly purple planting.
Salvia nemorosa ‘Sensation Compact Bright Rose’
Bright, clear rose-pink on very compact plants. Excellent for container growing and front-of-border edging. Pairs beautifully with Sensation Compact Deep Blue for a simple and very effective two-variety pot combination.
Salvia nemorosa ‘Marcus’
One of the original compact nemorosa varieties before the Sensation series arrived. Vibrant purple-blue, very reliable. Still one of the best compact nemorosa for general garden use.
✂ The Hampton Chop
Cut the plant back by about half immediately after the first flush of flowers — typically late June to early July. Done at the right time, this almost always produces a reliable second flush in August and September, effectively doubling the flowering season. Skip it and you’ll get a tired-looking plant with a few stray late blooms rather than a proper second wave.
☀ Soil and Position
Full sun is ideal but nemorosa tolerates partial shade — it just flowers less freely. The critical thing is drainage. Nemorosa dislikes wet, heavy clay soils and is particularly vulnerable to winter wet rather than cold. The RHS salvia growing guide covers soil preparation in detail.
🌿 Feeding
Nemorosa is not a hungry plant. A light dressing of balanced slow-release fertiliser in spring is all it needs. Over-feeding — particularly with high-nitrogen feeds — produces lush leafy growth at the expense of flowers.
All our nemorosa varieties are grown at our Staffordshire nursery using peat-free compost and dispatched nationwide. Every plant is clearly labelled with its hardiness rating, height and flowering season.
‘Caradonna’ remains the most widely recommended nemorosa variety for UK gardens — its near-black stems, violet-blue flowers and RHS Award of Garden Merit make it the benchmark against which other varieties are measured. For smaller gardens or containers, the Sensation Compact series offers the same reliable performance at 20–30cm. Browse the full range at Middleton Nurseries.
Yes — Salvia nemorosa is one of the most reliably hardy salvias you can grow in UK gardens, rated RHS H5 to H7. It survives winters throughout the UK including Scotland and exposed northern gardens without any protection. The main risk is winter wet rather than cold — ensure good drainage and nemorosa will return reliably year after year. The RHS salvia guide covers hardiness in more detail.
Cut the plant back by about half immediately after the first flush of flowers finishes — usually late June to early July. This Hampton Chop technique almost always produces a reliable second flush in August and September. Water well after cutting back and apply a light liquid feed to support the new growth.
The Sensation series are the most compact nemorosa available, growing to just 20–30cm. They’re fully hardy so pots can stay outside year-round, and they’re available across the colour range — deep blue, bright rose, and white. Sensation Compact White and Sensation Compact Deep Blue are both excellent container varieties.
Both are fully hardy perennial salvias with similar growing requirements, but Salvia sylvestris varieties tend to be slightly taller and more vigorous, with broader flower spikes. In practice the two are often confused — many plants sold as nemorosa are actually sylvestris hybrids. For garden purposes the distinction matters less than the specific variety’s height, colour and habit.
Plant at 30–45cm apart depending on variety — compact Sensation series at the closer spacing, taller varieties like ‘Caradonna’ at 40–45cm. Nemorosa spreads slowly to form a clump over time, so spacing that looks generous in year one will fill in naturally by year two or three.
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