How to Grow Rosemary at Home in the UK

Rosemary is one of the most rewarding herbs a UK beginner can grow. Plant one healthy bush in the right spot and it gives you fragrant, evergreen leaves every day of the year, with almost nothing asked in return. It is tough, long-lived and shrugs off drought — the one thing it genuinely dislikes is sitting in cold, wet soil over winter, and once you understand that, the rest is easy.

This guide covers everything you need to grow rosemary well in a British garden: where to plant it, which varieties cope best with our climate, how to keep it bushy rather than bare and woody, and how to make brand-new plants for free from cuttings.

Why grow rosemary

Rosemary earns its place in almost any garden, and it does so with very little fuss. As a hardy evergreen perennial, it lives for many years — a well-sited bush can easily reach a decade or more — and it keeps its needle-like leaves right through winter. That means fresh, aromatic rosemary for roast potatoes, lamb, focaccia and slow-cooked stews on the darkest January day, when most other herbs have died back or vanished underground.

It is also genuinely drought-tough. Rosemary evolved on dry, stony Mediterranean hillsides, so it copes with a hot, parched summer far better than thirsty crops like lettuce or tomatoes. Once established, it rarely needs watering at all in the ground — which makes it one of the easiest crops for beginners to keep alive, because the most common way people kill rosemary is by being too kind to it.

There is a wildlife bonus, too. Rosemary flowers early — often from late winter into spring — with small pale-blue blooms that bees adore at a time of year when little else is in flower. It sits naturally alongside other pollinator plants and helps build a more wildlife-friendly garden. One herb that feeds you year-round and feeds the bees is hard to argue with.

Where to grow rosemary

Position is the single most important decision you will make, and it comes down to two things: sun and drainage.

Rosemary wants full sun — at least six hours a day, and ideally more. A south- or west-facing spot against a wall or fence is perfect, because the masonry stores warmth and helps keep the plant a little drier and snugger in winter. In too much shade, growth becomes thin, sappy and floppy, the flavour fades, and the plant is far more likely to rot. If you only have a shady garden, rosemary is probably not the herb to start with.

The second factor — sharp drainage — is what actually decides whether your rosemary survives a British winter. It is a common myth that rosemary is killed by cold; in truth, most varieties are hardy down to around -10°C or lower. What kills them is the combination of cold and wet: waterlogged, heavy soil in a damp UK winter rots the roots, and a rotted plant has no chance when frost arrives.

This is why so many UK gardeners grow rosemary on a slight slope, in a raised bed, in a gravel garden, or in a pot. If your soil is light and sandy, you are in luck — plant straight into the ground. If you garden on heavy clay, you have two good options: improve the drainage before planting, or grow in a container.

Rosemary in pots

For anyone with heavy, wet ground — or no garden at all — a container is often the best way to grow rosemary, not a compromise. A pot lets you control the compost completely, guarantees the drainage rosemary craves, and lets you move the plant to a sheltered spot during a particularly hard or wet winter.

It is also one of the most reliable herbs for growing food in containers, and a small upright variety will happily sit by a sunny kitchen door for years. The main rules are a free-draining, gritty mix, a pot with good drainage holes, and resisting the urge to overwater. We cover the container method in more detail in our guide to growing Mediterranean herbs, which share rosemary's love of sun and sharp drainage.

Choosing a variety

Most rosemary sold in the UK is simply labelled "rosemary" and will grow perfectly well. But picking the right type for your space and climate makes a real difference, and a few named varieties are worth seeking out.

Upright (common) rosemary is the classic, all-purpose form — a tall, bushy shrub reaching around 1–1.5m, ideal for a permanent spot in a border or against a wall, and the best choice for steady harvesting.

'Miss Jessopp's Upright' is the variety to look for if you want a reliable, hardy, strongly upright bush. It is one of the toughest forms for British conditions, holds its shape well, and is excellent for both cooking and informal hedging. For most beginners in most of the UK, this is the safe, sensible pick.

Prostrate (trailing) rosemary is a low, spreading form that tumbles beautifully over a wall, raised bed or the edge of a large pot. It is lovely to look at and just as usable in the kitchen, but it is noticeably less hardy than the uprights — in colder or more exposed parts of the UK it is safest grown in a pot that can be moved under cover for winter.

'Tuscan Blue' is a vigorous, upright variety with broad leaves and richly coloured deep-blue flowers. It is handsome and a strong grower in a warm, sheltered, sunny spot, though it is a little less hardy than 'Miss Jessopp's Upright' — a fine choice for a mild southern garden or a moveable container.

Planting rosemary

The best time to plant is spring (April to June), once the soil has warmed and the risk of hard frost has passed, which gives the plant a full season to settle in before winter. Early autumn (September) also works in milder areas, but spring is the safer bet across most of the UK.

If you have bought a young plant from a garden centre that has been grown under cover, get it used to outdoor conditions gradually over a week or two before planting out — a process called hardening off — so the foliage isn't shocked by cold nights and wind.

Planting in the ground:

1. Choose your sunniest, best-drained spot. Dig a hole a little wider than the rootball.
2. On heavy or clay soil, work in a generous amount of horticultural grit or coarse sand to open up the planting area and improve drainage. A handful of grit in the base of the hole helps too. Our guide to improving your soil explains how to lighten heavy ground.
3. Set the plant so the top of the rootball sits level with, or very slightly above, the surrounding soil — never in a dip where water can collect.
4. Firm it in gently, water once to settle the roots, then ease off.
5. Space plants about 60–90cm apart if you are growing several or making a low hedge.

Planting in a pot:

1. Pick a pot at least 30cm across, with plenty of drainage holes. Terracotta is ideal — it breathes and dries out between waterings, which rosemary loves.
2. Make a free-draining mix: a peat-free, multi-purpose or soil-based (John Innes No. 2) compost cut with around a third horticultural grit. Avoid rich, moisture-retentive composts, which stay too wet.
3. Add a layer of grit or broken crocks at the base to keep the drainage holes clear.
4. Plant, water lightly to settle, and stand the pot in full sun.

Caring for rosemary

Once planted, rosemary asks for remarkably little. In fact, the main skill is knowing when to do nothing.

Watering. Keep a newly planted rosemary watered through its first summer while it establishes — water deeply, but only when the top few centimetres of soil are dry, never on a fixed schedule. After the first year, a rosemary in the ground rarely needs watering at all, even in a dry UK summer. Plants in pots dry out faster and will need an occasional drink in hot weather, but always let the compost dry out between waterings. Overwatering is the number-one killer of rosemary, in pots especially.

Feeding. Resist the temptation. Rosemary actually grows better in poor, lean soil, and too much feeding produces soft, sappy growth that is weaker, less flavourful and more prone to winter damage. A plant in the ground needs no feeding at all. For a long-established pot plant, a single light feed with a general-purpose fertiliser in spring is plenty — no more.

Mulching. If you mulch, do it the Mediterranean way: spread a layer of grit, gravel or coarse sand around the base of the plant, not rich compost or bark. A gritty mulch keeps the crown of the plant dry, reflects warmth, suppresses weeds and improves the look of the bed — whereas a moisture-holding mulch piled against the stems traps damp and invites rot. This is the opposite of how you would mulch most vegetables, so it is worth flagging if you have learned the composting habit elsewhere in the garden.

Winter. In most of the UK, an established rosemary in well-drained soil needs no winter protection — it simply carries on. In colder, wetter or more exposed gardens, a pot-grown plant can be moved into the shelter of a wall, a porch or an unheated greenhouse for the worst of the weather. Keep harvesting lightly all winter; just take less than you would in summer, as the plant is barely growing.

Pruning rosemary

A little regular pruning is what separates a dense, productive, good-looking rosemary from a leggy, woody one collapsing open in the middle. The golden rule is short and absolute: never cut back into old, bare wood.

Unlike many shrubs, rosemary will not reliably re-sprout from the older brown, leafless stems. Cut hard into that old wood and you will usually be left with a stub that simply dies. All your pruning must stay within the green, leafy, current growth.

The simplest routine is to trim lightly straight after flowering — usually June or July — cutting back the flowered shoots by a few centimetres into leafy growth to encourage bushy regrowth. A second, light tidy in late summer keeps the shape, but stop pruning by early autumn so any new growth has time to firm up before the cold. Crucially, do not prune hard in winter.

Done little and often, this keeps the plant compact, full of fresh shoots and far better at withstanding wind, snow and rain. Every time you snip sprigs for the kitchen, you are gently pruning anyway, which is one reason rosemary you actually use stays in better shape than one you ignore. For the full method — including what to do with an old, overgrown plant that has gone woody and bare — see our dedicated guide to pruning rosemary.

Propagation from cuttings

Here is rosemary's best-kept secret for beginners: it is one of the easiest plants in the whole garden to propagate for free. Once you have a single bush, you need never buy another rosemary again — and you will have plants to give away too.

The method is simple. In late spring through to early autumn, snip 8–10cm of healthy, non-flowering shoot tip, strip the leaves from the lower half, push the bare stem into a gritty, free-draining cutting compost, and keep it somewhere warm, bright and lightly watered. Roots usually form within a few weeks, and you have a new plant identical to the parent.

This is the most reliable way to "buy" the variety you want, to replace an ageing bush before it dies, or to turn one good plant into a whole hedge over a couple of seasons. It is also a brilliant, almost foolproof project for getting kids growing, because the results are quick and the success rate is high. Our step-by-step guide to taking rosemary from cuttings walks through the whole process with timings and troubleshooting.

Once you have explored the position, varieties and care above, a few well-chosen bits of kit make growing and propagating rosemary even easier. Here is what genuinely helps — nothing fancy required.

If you would rather start with a ready-grown plant than wait for cuttings to root, a small pot of a hardy named variety from a reputable nursery is a sound investment that will pay you back for years.

Harvesting and using rosemary

The best thing about rosemary is that you harvest it all year round. Simply snip off as many sprigs as you need, cutting just above a leafy joint to encourage the plant to bush out. There is no season to wait for — light, regular picking actively keeps the plant in better shape.

A few simple habits help:

• Pick lightly in winter. The plant is barely growing, so take what you need for a roast but don't strip it bare.
• Use the youngest growth for the best flavour and tenderest texture — the soft green tips, not the tough old woody stems.
• Harvest in the morning if you want the most aromatic sprigs, when the oils in the leaves are at their strongest.

In the kitchen, rosemary's robust, piney flavour stands up to long, slow cooking — roast lamb and potatoes, focaccia, hearty stews, roasted root veg and infused oils. Whole sprigs added during cooking and removed before serving give plenty of flavour without a mouthful of needles.

Because the bush is evergreen, you rarely need to preserve rosemary — fresh is always available. But if you prune a lot at once, or want a jar for convenience, rosemary dries and stores extremely well. Our guide to drying and storing herbs covers the simplest methods, from air-drying sprigs to freezing.

Common problems

Rosemary is admirably trouble-free, and nearly every problem traces back to one cause: too much water at the roots. Get the drainage right and you will rarely see anything go wrong.

Root rot from wet soil. This is by far the most common way rosemary dies in the UK, and it is almost always avoidable. The classic sign is a plant that suddenly goes grey-green, droops, drops needles and dies back — often after a wet winter or over-enthusiastic watering. By the time the foliage looks bad, the roots have usually rotted and there is little you can do. The fix is prevention: full sun, gritty free-draining soil, a pot that drains freely, and watering only when genuinely dry. If a treasured plant starts to go, take cuttings from any healthy growth straight away as insurance.

Going woody, bare and leggy. An older rosemary left unpruned splays open, with bare brown stems at the base and leaves only at the tips. This is a pruning issue, not a disease — and because rosemary won't regrow from old wood, the answer is to prevent it with light annual trimming rather than cure it with a hard cut-back. For a plant that has already gone too far, the realistic route is to raise a replacement from cuttings.

Rosemary beetle. This small but striking pest — a metallic green-and-purple striped beetle a few millimetres long — has become widespread in UK gardens and also attacks lavender, sage and thyme. Both the adults and their grey grubs chew the foliage, especially from late summer through autumn and winter. On a small plant the simplest, safest control is to check the bush regularly and pick the beetles and grubs off by hand (a sheet of paper held underneath to catch them as you tap the stems works well). Encouraging natural predators by attracting beneficial insects into the garden helps keep numbers down over time, so reach for sprays only as a last resort — and never while the plant is in flower and feeding bees.

Powdery mildew indoors. Rosemary grown permanently inside on a warm, still, poorly ventilated windowsill can develop powdery mildew or simply sulk. Rosemary really is an outdoor plant at heart — it dislikes warm, stagnant indoor air. If you want a herb for permanent indoor windowsill growing, basil or parsley are happier choices, and you can read more about herbs that suit a windowsill in our basil guide. Keep rosemary outside, or only bring a pot in briefly over the harshest weather.

A quick recap

Grow rosemary in your sunniest, best-drained spot — or in a gritty pot if your soil is heavy and wet. Buy a hardy variety like 'Miss Jessopp's Upright', plant it in spring with plenty of grit, then largely leave it alone: water sparingly, never feed it richly, and mulch with grit rather than compost. Trim lightly after flowering to keep it bushy, never cutting into old bare wood, and take a few cuttings each summer so you always have a young plant coming on.

Do that, and one small herb will reward you with fragrant, evergreen leaves for your kitchen — and early flowers for the bees — for many years to come. It is one of the most generous, forgiving plants you can grow, and a perfect place for a new gardener to build confidence. When you are ready for more, the wider world of Mediterranean herbs — thyme, sage, oregano and the rest — grows in exactly the same easy, sun-and-grit way, and you can browse the full herbs section for the next plant to try.