Cyclamen Care: Keep It Blooming All Winter

Every September the garden centres fill with cyclamen — those swept-back flowers in white, pink, and magenta hovering over marbled, heart-shaped leaves. And every January, thousands of them end up in the bin, having collapsed into a yellow mess. The tragedy is that cyclamen aren't hard; they're just winter plants being treated like summer ones. Get the temperature and the watering right and one plant will flower for four or five months straight.

Which cyclamen is which

The potted plant sold from early autumn is the florist's cyclamen, Cyclamen persicum — a tender species that lives indoors. Its small, tough cousins Cyclamen hederifolium (autumn-flowering) and Cyclamen coum (late-winter-flowering) are hardy garden plants that naturalise beautifully under trees and shrubs outdoors. This guide focuses on the indoor florist's type, but if you garden, the hardy species are among the best value bulbs you can plant this month.

The golden rule: keep it cool

Cyclamen grow wild in the eastern Mediterranean, where they wake in the cool, wet autumn and sleep through the hot summer. Indoors, that translates to a bright, cool room: 10–16°C is ideal, and anything consistently above about 20°C tells the plant summer has arrived — flowering stalls, leaves yellow, and it starts shutting down. An unheated porch, a cool bedroom, or the brightest windowsill in your coolest room beats pride of place above a radiator every time.

Light

Give cyclamen bright, indirect light through autumn and winter — an east- or north-facing windowsill is perfect, and because winter sun is weak, even a south-facing sill is usually fine. Turn the pot a quarter every week so the dome of flowers grows evenly.

Watering: from below, and only when it asks

The tuber sits partly proud of the soil, and water pooling in its crown — or on the leaf and flower stems — invites rot. So water cyclamen from below: stand the pot in 2–3 cm of water for 15–20 minutes, let it drink, then drain. Do this when the surface of the compost feels dry and the pot is noticeably lighter; in a cool room that's typically once or twice a week. A wilting cyclamen with dry compost will usually revive within hours of a good bottom-watering.

Warning: cyclamen tubers are toxic to cats and dogs if dug up and chewed, so keep the pot out of a bored pet's reach.

Deadheading and feeding

Remove spent flowers and yellow leaves with their entire stem: follow the stem to the base, then give it a sharp twist and pull. Cutting halfway leaves a stump that rots back to the tuber. Deadheaded regularly and fed every two to three weeks with a half-strength high-potash fertiliser (tomato feed works), a healthy plant keeps throwing up new buds from the tuber all winter.

After flowering: the summer rest

Around April or May the leaves will yellow no matter what you do. That's not death — it's dormancy. Stop feeding, reduce watering gradually until the foliage has died back, then park the pot somewhere cool, dry, and shaded for the summer, watering only a splash every few weeks so the tuber doesn't shrivel. In late August or September, fresh leaf buds appear on the tuber: repot into fresh compost with the top third of the tuber above the surface, resume bottom-watering, and the cycle starts again.

Common cyclamen problems

• Yellow leaves in mid-season: the room is too warm, or the compost is staying wet — move it cooler and let it dry slightly.
• Collapsed, drooping plant with dry compost: thirst — bottom-water for 20 minutes and it should stand back up.
• Collapsed plant with wet compost and a soft tuber: crown or tuber rot from overhead watering — it's rarely saveable; next time, water from below.
• Grey fluff on stems and dying flowers: botrytis — remove affected stems entirely, improve airflow, and space plants out.
• Flowering stopped after a warm spell: buds pause above 20°C; a cooler spot usually restarts them within a couple of weeks.

Tip: if your cyclamen came without a label, photograph it in PlantMe to confirm the species, then let the app's winter care reminders pace your bottom-watering through the season.