Herbs
Sage
Salvia officinalis
Timings for your region
Suggested: Moderate · Explained in the glossary
Start indoorsmid March – early May
Plantingearly May – mid June
Harvestearly May – late October
Practical tip
Goes bare and woody at the base after a few years — cut hard back into young wood in spring, but never into the old.
Origin & history
Culinary sage comes from the dry limestone slopes of the northern Mediterranean, above all the Dalmatian coast and the Balkans — a large share of the dried sage in trade still comes from there, mostly from Albania. It was cultivated north of the Alps early on: Charlemagne’s estate ordinance of around 800 lists salvia among the plants every crown estate was to grow. Botanically it belongs to the largest genus of the mint family, with around a thousand species; its flowers have the characteristic lever mechanism that tips pollen onto the back of a visiting bumblebee.
Varieties
For the kitchen, Salvia officinalis is the species you want; the large-leaved selection “Berggarten” stays compact, barely flowers and is considered particularly robust through winter. The coloured forms with red, gold-edged or white-variegated foliage are pretty but milder in flavour and more sensitive to wet winters. Do not confuse it with clary sage (Salvia sclarea), a biennial ornamental, or pineapple sage (Salvia elegans), which is not hardy here.
Care
Sage gets no feeding and is watered only while establishing and in long dry spells; nitrogen produces soft foliage that comes through winter badly. If you want plenty of leaf, cut out the flower stems as soon as they appear — the plant then puts its energy into foliage rather than seed. Leave the secateurs alone in late summer and autumn: late cuts push soft shoots that the first frost takes. The easiest way to replace an old bush that has fallen open is a layer — weigh a low shoot down with soil and it will root within a season.
What can go wrong
Winter losses almost always come down to wet rather than cold: in heavy soil the roots rot, so plant high, work in sand or grit, and keep bark mulch away from the base of the stem. In muggy summers mildew coats the leaves in white, especially on dense, unpruned bushes — thin the plant out, space them further apart and water at the base in the morning. Pale speckling on the upper leaf surface usually comes from leafhoppers and is purely cosmetic; the leaves stay usable.
Harvest, storage & kitchen
Sage needs a firm hand with the dose: two or three leaves season a whole pan, and the longer it cooks the more penetrating it gets. Classic uses are tossed in butter with gnocchi and ravioli, fried whole as a crisp, and with rich meat as in saltimbocca. In mild winters the subshrub keeps its leaves, so you can pick fresh ones even in January — usually better than dried. If you do dry it, do so quickly, airy and dark, or it takes on a musty note.
All timings are guide values for the given climate, not a guarantee. Weather, aspect and variety all have a say.