How to Grow Wintersweet (Chimonanthus)

Growing wintersweet is mostly about two things: picking the right wall and being patient. Chimonanthus praecox gives you waxy, see-through pale yellow flowers on bare branches from December to February. The scent is amazing, sweet and far-reaching on a still, cold day. The catch is that it can take years to flower, and in the wrong spot it may never flower at all. Get the planting right and you’ll have midwinter perfume for decades.

What wintersweet is and why gardeners love it

Wintersweet is a slow-growing shrub from China, about 3m tall and 2.5m wide when mature. It flowers on bare stems in the depths of winter, usually December to February. Each little nodding flower has waxy, primrose-yellow petals, often with a maroon-purple centre.

From a distance, the flowers look modest. The scent does the work. On a frosty, still morning it can fill a whole courtyard, and few plants smell this good in January.

It’s not a plant for instant results. It’s happiest trained flat against a brick wall, where the warmth suits it. If you’re happy to play the long game, few shrubs are more rewarding.

Waxy pale yellow flowers open on bare wood, each with a maroon centre.

How long does wintersweet take to flower?

Longer than most labels tell you. How long depends on what you buy.

A seed-grown plant can take up to 10 years to flower, sometimes more. A good-sized pot-grown plant is much quicker, often flowering within a few years, especially against a warm wall. Older plants with more mature wood get there sooner.

Handy tip: buy wintersweet in flower in midwinter if you can. You’ll see the flower colour, smell the scent and know the plant is old enough to bloom.

Why summer sun decides next winter’s flowers

Wintersweet flowers on last year’s stems. The stems that grow this summer carry next winter’s flower buds. For those buds to form, the stems need to ripen, and that takes plenty of sun and warmth from July to September.

In shade or a cool, open spot, you’ll get soft, leafy growth and no flowers, year after year. People often blame the cold winter, but the real cause was a lack of summer sun.

That’s why a warm wall makes such a difference. Brick soaks up heat and bounces back light, baking the stems so they ripen well. A south or west-facing wall is ideal. Our guide to south-facing gardens shows how to make the most of that warmth. The RHS also recommends full sun and shelter.

Trained against a warm, sunny wall, the ripened stems flower well each winter.

How to plant wintersweet

Get the planting right once and it’ll look after itself. Here’s how.

1. Choose the wall. A south or west-facing wall or fence in full sun, sheltered from cold north and east winds. Avoid frost pockets at the bottom of slopes.
2. Check the drainage. Any soil is fine, chalk and clay included, as long as it doesn’t stay waterlogged. Dig a hole and fill it with water. It should drain away within a few hours.
3. Dig the hole. Make it twice as wide as the rootball and just as deep. Loosen the sides and bottom with a fork.
4. Plant 30 to 45cm out from the wall. Soil right at the foot of a wall stays dry, so plant a little way out and angle the roots away from the brick.
5. Plant level. The top of the rootball should sit flush with the soil. Backfill, firm gently and water well.
6. Mulch and support. Add a layer of bark or compost, keeping it off the stem. Fix horizontal wires to the wall and tie in the main stems.

The biggest mistake is planting somewhere handy rather than somewhere sunny. A wintersweet in light shade may grow happily but never flower. If your only sunny wall is taken, it may be worth moving another shrub. Our guide to moving a shrub safely shows how.

Looking after wintersweet through the year

It needs very little care once settled. Water new plants through their first two summers, especially by a wall where the soil dries fast. After that, the roots find their own water and you can mostly stop.

Feed lightly. A handful of general fertiliser in spring and a fresh mulch is plenty. Too much feed gives soft, leafy growth that doesn’t ripen, which is the opposite of what you want. Plants on poorer soil often flower better than pampered ones.

Keep the base weed-free. Tie new stems to the wires through summer so they lie flat and get plenty of sun. That tying-in helps the stems ripen, so it’s more than just tidying. For more on training stems against a wall, see our guide to training climbers.

In summer it’s a plain green shrub, quietly ripening the stems for next winter’s flowers.

When and how to prune wintersweet

Prune only after flowering, in February. Because it flowers on last year’s stems, pruning in summer or autumn cuts off the coming winter’s flowers.

Keep it light. Remove old, weak, dead or crossing stems to open up the middle. On a wall-trained plant, cut the stems that have flowered back to a strong bud or to the main framework, and tie in new ones. Shape it rather than cutting it hard.

Wintersweet doesn’t like heavy pruning and regrows slowly. If an old plant has become a tangle, spread the tidy-up over two or three years. Our shrub pruning guide explains how, and our best winter flowering shrubs shows how wintersweet compares with others.

Prune straight after flowering in February, then tie in the new stems.

Best wintersweet varieties for UK gardens

There are only a few to choose from, and it’s a trade between scent and flower size.

The plain species has the strongest scent, which is why most people grow it. ‘Grandiflorus’ has larger, brighter yellow flowers with deeper maroon centres, but less scent. ‘Luteus’ has clear yellow flowers without the maroon centre, opening a little later. ‘Luteus’ holds the RHS Award of Garden Merit.

For cutting, choose ‘Grandiflorus’. For scent that fills the garden, buy the species. For more fragrant ideas, see our best scented plants for UK gardens.

The plain species has the deepest maroon at the heart of each waxy flower.

How wintersweet compares with other winter-scented shrubs

Wintersweet is the slowest to get going of the winter-scented shrubs. Growing a few others alongside means you’ll have scent while you wait.

Sarcococca and winter honeysuckle settle in quickly and cope with some shade, so they’re great while you wait. Witch hazel matches wintersweet in size and timing but prefers less chalky soil. Daphne rivals the scent but doesn’t live as long. See our guides to witch hazel, sarcococca and daphne to plan a winter full of scent.

Wintersweet jobs month by month

The two jobs that matter most are pruning in February and keeping stems in the sun from July to September. Our winter gardening jobs list has the rest of the cold-season jobs.

A mature wintersweet flowering by a stone wall when little else is in bloom.

A few cut stems will scent a whole room. Pick them in bud and let them open indoors.

Cutting wintersweet for the house

A few stems will scent a whole room. Pick them in December and January when the buds are just showing colour. Cut on a dry day with sharp secateurs, taking spare shoots rather than main framework stems.

Indoors, the warmth opens the buds in a day or two. Strip off any buds that would sit underwater and recut the stems at an angle. Keep the vase somewhere cool so they last longer.

Picking stems doubles as a light prune, so take them from a plant with plenty to spare. The tips in our guide to conditioning cut flowers work well for winter stems too.

A warm courtyard wall traps heat and scent, making wintersweet a great choice for small city gardens.

Common wintersweet mistakes

Most problems come down to a few easy-to-avoid slips.

Planting in shade or an open border. The stems never ripen, so no flower buds form. The plant looks healthy, so nobody suspects the spot. Plant against a sunny wall from the start.

Pruning at the wrong time. Cutting back in summer or autumn removes next winter’s flowers. Prune only in February, straight after flowering.

Giving up too soon. A plant that hasn’t flowered yet may just be too young. Buy a decent-sized pot-grown plant and be patient.

Feeding too much. Rich feeding gives soft growth that won’t ripen. Feed lightly.

Good to know: wintersweet seeds are poisonous if eaten. Keep seed pods away from children and pets.

Frequently asked questions

How long does wintersweet take to flower?

Usually a few years from a good pot-grown plant. Seed-grown plants can take up to 10 years, sometimes longer. Buy the biggest pot-grown plant you can and put it against a warm wall. That’s the best way to get flowers sooner.

Why does my wintersweet not flower?

Usually its stems didn’t get enough summer sun. Flower buds form on stems grown the summer before, and those stems need heat and light to ripen. In shade you get leaves but no buds. Move it to a sunny wall, or thin nearby plants to let in more light. Pruning in autumn can also remove the buds.

Where should I plant wintersweet?

Against a warm south or west-facing wall in full sun. The wall shelters the winter flowers from cold wind, and its warmth ripens the stems. Any well-drained soil is fine, including chalk and clay that doesn’t stay wet. Avoid frost pockets and deep shade.

Does wintersweet need a wall to grow?

No, but a warm wall makes flowering much more reliable. It will grow as a free-standing shrub, but in an open spot the stems often don’t ripen enough to flower well. In colder northern gardens, a wall is close to essential. In a mild southern garden, a sunny, sheltered open spot can work.

When and how do I prune wintersweet?

Prune straight after flowering in February, never in autumn. It flowers on last year’s stems, so autumn pruning removes the next display. Take out old, weak or crossing stems and cut wall-trained shoots back to the framework. Keep it light, as it regrows slowly.

What is the most fragrant wintersweet?

The plain species, Chimonanthus praecox, smells strongest. ‘Grandiflorus’ has bigger, brighter flowers but less scent. ‘Luteus’ has clear yellow flowers without the maroon centre. If scent matters most, buy the species.

Can you grow wintersweet from cuttings?

Yes, but it’s slow and hit and miss. Take softwood cuttings in early summer, or layer a low branch in autumn. Layering is the surest way at home but can take a couple of years to root. Most people buy a named pot-grown plant, which also flowers much sooner.

Is wintersweet hardy in the UK?

Yes, established plants are fully hardy. Young plants and open flowers can be damaged by hard frost and cold wind, which is why shelter helps. In cold northern or hilly gardens, give it your warmest, most sheltered wall.

For more ideas, browse our plant growing guides or our best winter flowering plants for the UK, with low-growing partners to enjoy while your wintersweet grows up.