How-to Guide
Cyclamen Care
The short answer
Cyclamen is a winter gift plant that thrives on what most houseplants hate: cold rooms. Clemson Extension's targets are 60 to 65°F by day and around 50°F at night — above about 70°F, flower buds fail to develop, and warm rooms are why so many cyclamen fizzle within weeks. Give it bright, indirect light and the coolest windowsill in the house.
Water when the surface of the mix feels dry, and always along the edge of the pot or from below (stand the pot in water, then drain) so water never sits on the half-exposed tuber, which rots easily. Feed lightly while in bloom.
This plant isn't dead when it collapses in spring — it's going dormant, as it does every summer in the wild. Let the foliage die back, keep it barely moist in a cool, shaded spot through a 6-8 week rest, then repot and resume watering in mid-to-late summer; with bright light and cool temperatures it can be back in bloom by mid-winter.
Light and the cool-temperature rule
Bright, indirect light is right during the growing and blooming season — an east window, or a bright north sill. Temperature is the real make-or-break factor: Clemson Extension specifies 60 to 65°F days and about 50°F nights, warning that buds fail to develop above 70°F. Iowa State Extension similarly recommends 50-60°F while in bloom. In practice, the coldest bright spot in the house — an unheated sunroom, an entry, a drafty sill away from radiators — is cyclamen heaven, and a plant kept cool can flower for a month or more.
Watering without rotting the tuber
Cyclamen grows from a tuber that sits partly above the soil surface, and water pooling on it invites rot. Water when the potting mix feels dry to the touch, and keep water off the crown: Clemson Extension's instruction is to water along the edge of the pot or from below. Bottom watering is easy — stand the pot in a saucer or basin of water for a while, then let it drain fully; never leave it standing in water.
While the plant is in active growth and bloom, feed lightly — Iowa State suggests a dilute houseplant fertilizer every 2 weeks during bloom. Snap off spent flowers and yellowing leaves with a sharp tug at the base of the stem.
Summer dormancy: it's resting, not dying
Sometime in spring the leaves yellow and the plant collapses. This is the natural cycle: in its Mediterranean habitat, cyclamen sleeps through the hot months. Gradually reduce watering as foliage fades and let the plant go dormant. Iowa State Extension describes a rest of approximately 6 to 8 weeks in late spring and early summer, with the dormant tuber kept cool (45-50°F) and shaded; Clemson advises not letting the pot dry out completely during the rest.
Waking it up for rebloom
In mid-to-late summer, restart the plant: Iowa State recommends repotting the tuber into fresh mix with the top of the tuber slightly above the soil surface, then resuming watering. Clemson's sequence: keep it shaded until new leaves emerge (around mid-September), then move it to a bright spot, water thoroughly and regularly, and fertilize monthly.
From there, the winter rules apply again — bright light, cool nights near 50°F, days 60-65°F. Given that, Clemson says a florist cyclamen will be back in bloom by mid-winter, and the cycle can repeat for years.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Clemson Cooperative Extension HGIC — Florist Cyclamen — 60-65°F day / ~50°F night; buds fail above 70°F; water along pot edge or from below to avoid tuber rot; keep dormant tuber from fully drying, shade until new leaves ~mid-September then bright light + monthly feeding; rebloom by mid-winter; bloom lasts up to 4 weeks
- Iowa State University Extension — All About Cyclamen — Bright indirect light, 50-60°F in bloom; corm susceptible to overwatering and rot; dilute fertilizer every 2 weeks in bloom; dormancy ~6-8 weeks late spring/early summer at 45-50°F shaded; repot with top of tuber slightly above soil and resume watering in mid-late summer for fall/winter rebloom