Perennial

Balkan clary

Salvia nemorosa · Lamiaceae · also called woodland sage, perennial salvia
By Hannah Price · Updated

Balkan clary seasonal calendar
JanFebMarAprMayJunJulAugSepOctNovDec
FlowersFlowers in JuneFlowers in JulyFlowers in AugustFlowers in September
PlantPlant in AprilPlant in MayPlant in September
PrunePrune in MarchPrune in July
Looks goodLooks good in JuneLooks good in JulyLooks good in AugustLooks good in September

Overview

This hardy salvia forms upright clumps topped with slender spikes of small violet, blue, pink or white flowers wrapped in coloured bracts, so the colour lingers after the petals drop. Bees work it constantly. Look for 'Caradonna' with deep violet flowers on almost black stems, 'Ostfriesland' (East Friesland) in rich purple, and the pale pink 'Schwellenburg'. It is a reliable alternative to lavender where winters are too wet for that.

Where to grow balkan clary

A sunny, open border with soil that drains well is ideal, and it shrugs off chalk and summer drought once established. Use it in drifts at the front or middle of a border, alongside roses, catmint, achillea and grasses.

Planting

Plant in spring or early autumn, 40–45 cm apart. On heavy soil, dig in grit to improve drainage. Water through the first summer.

Care through the year

Spring

Cut down any old stems you left over winter as new rosettes appear.

Summer

As soon as the first spikes fade, cut the whole plant back to the leafy base; it regrows quickly and reflowers. Water only in prolonged drought.

Autumn

Let late spikes stand, or tidy up if they flop.

Winter

Little needed. Avoid planting where water sits in winter.

Pruning

The summer cut-back is what keeps this plant flowering. Use shears to remove the spent spikes down to fresh foliage. A final tidy of dead stems happens in late winter or early spring.

Propagation

Divide clumps in spring, ideally every few years to keep them vigorous. Softwood cuttings of non-flowering shoots root readily in late spring and early summer.

Common problems

Mostly trouble-free. Slugs may nibble new growth, and powdery mildew can appear in hot, dry spells; water at the base and cut back affected growth. Plants that die over winter usually suffered from waterlogged soil.

Guides to the problems most likely to affect balkan clary:

Something else wrong? Diagnose it by symptom.

Month-by-month reminders

Jobs for this plant come round in March, April, May, July and September. Each month page lists everything else worth doing in the garden at the same time.

Related plants

Sources

Botanical names follow Kew's Plants of the World Online; growing attributes were checked against the references below. Text is our own. See our editorial policy.