Florist's cyclamen leaves turning yellow: causes and what to do
17 results in the diagnosis tree begin with yellowing leaves, 7 of them marked likely when the answers fit. They are ordered here for Florist's cyclamen (Cyclamen persicum), using what its sources say about soil moisture, light, soil, watering and feeding and one problem recorded for it.
Sources last read 14 September 2026.
Cyclamen persicum, the Persian cyclamen, is a species of flowering herbaceous perennial plant growing from a tuber, native to rocky hillsides, shrubland, and woodland up to 1,200 m (3,900 ft) above sea level, from south-central Turkey to the Levant. Cultivars of this species are the commonly seen florist's cyclamen. Wikipedia, CC BY-SA 4.0
Native range: Algeria to E. Medit. (subtropical). Also sold as Persian Cyclamen.
What Florist's cyclamen’s sources say that bears on this
- Soil moisture
- Well-drainedRHS · read 13 September 2026
- Light
- Full sun, Partial shadeRHS · read 13 September 2026
- Soil
- Loam; pH Acid or Alkaline or NeutralRHS · read 13 September 2026
- Watering
- Water only once the soil feels dry, and keep water off the crown, as that can make the tubers rot. Pour water around the rim or at the pot's base.NC State Extension · read 13 September 2026During growth, water moderately and feed every two weeks with a low nitrogen liquid fertiliser. After flowering, water less, and keep dry while dormant.RHS · read 13 September 2026
- Feeding
- While growing, water moderately and give a low-nitrogen liquid fertiliser every two weeks.RHS · read 13 September 2026
How this shows up on a Florist's cyclamen
Buds that yellow and drop on a leafy plant
Buds appear on the florist's cyclamen and then fall while still closed, often within days of the plant being moved, turned or left to dry out.
A bud is the most expensive thing on the plant. Kept below the full sun, partial shade its source names, or moved while in bud, the florist's cyclamen abandons buds before it abandons leaves.
Telling it apart: When the buds dropped. Within days of a move or a dry spell is the change; buds that drop with nothing changed point at uneven watering or pests on the buds.
RHS · read 13 September 2026Possible causes, likeliest first for a Florist's cyclamen
Most likely not enough light
Ranked higher because Florist's cyclamen's recorded problems point this way.
- Full sun, Partial shade RHS · read 13 September 2026
Why: Far from a bright window, a florist's cyclamen builds leaves it cannot afford.
What to try:
- Move it closer to the brightest window you have, over a week or two rather than in one step.Useful: grow light
- Water less while it is in low light; a florist's cyclamen that is barely growing uses little.
What would settle it: Compare a new leaf with one from last year. Smaller and paler, with a longer gap below it, is the reaching pattern rather than a nutrient one.
Most likely too little water
Ranked higher because Florist's cyclamen's recorded problems point this way.
Its source describes well-drained soil for this plant, so soil that dries between waterings is expected. The concern is soil left dry long enough for the plant to go limp or wrinkle.
- Well-drained RHS · read 13 September 2026
Why: Soil dry two inches down, under lower leaves that are yellowing or leaves that are falling, is a florist's cyclamen shedding what it cannot support.
What to try:
- Water until it runs from the drainage hole, then let the pot drain.Useful: pot with drainage holes
- If the water runs straight through a shrunken rootball, stand the pot in water for twenty minutes so the compost can take it up.
What would settle it: Water it thoroughly and look again the same evening. A thirsty plant firms up fast. One that does not has a root problem rather than a water problem.
Most likely too little water
Ranked higher because Florist's cyclamen's recorded problems point this way.
Its source describes well-drained soil for this plant, so soil that dries between waterings is expected. The concern is soil left dry long enough for the plant to go limp or wrinkle.
- Well-drained RHS · read 13 September 2026
Why: Soil dry two inches down leaves the roots nothing to send up, and the leaf edges are the last tissue in line.
What to try:
- Water thoroughly, until it runs from the drainage hole.Useful: pot with drainage holes
- Check the soil with a finger every few days rather than watering on a fixed day.Useful: moisture meter
What would settle it: Water it thoroughly and watch the next new leaves. If they come in with clean edges under steadier watering, the edges were thirst.
Less likely for a Florist's cyclamen, still possible
- Most likely short of nutrients
- Most likely too much water
- Most likely a build-up of salts in the soil
- Most likely cold
- Light and feeding are both plausible, and this does not separate them
- Possibly too much direct sun
- Possibly too much direct sun, or feeding
- This may be ordinary leaf loss
- Nutrients are an unlikely explanation here
- Possibly root rot, in a pot that has stopped draining
- Probably too much water, but this is not settled
- Possibly dry air
- Probably too much water
- The answers do not point at one cause
Questions
- What usually causes yellowing leaves on a Florist's cyclamen?
- For Florist's cyclamen: most likely not enough light, most likely too little water and most likely too little water.
- How can I tell which one it is on my Florist's cyclamen?
- Where is the yellowing? The lowest leaves, working upward; New growth at the top, while older leaves stay green; Between the veins, the veins themselves still green; At the leaf tips and edges, browning as it goes; Patchy, only on the side facing the window.
- What do Florist's cyclamen's sources say about its soil moisture?
- RHS: Well-drained.
- What does this look like on a Florist's cyclamen?
- Buds appear on the florist's cyclamen and then fall while still closed, often within days of the plant being moved, turned or left to dry out. Telling it apart: When the buds dropped. Within days of a move or a dry spell is the change; buds that drop with nothing changed point at uneven watering or pests on the buds.
- Is Florist's cyclamen safe to handle while I check it?
- Its sources list it as toxic to cats and dogs. Wash your hands after handling the roots or sap, and keep trimmings away from pets.
Other plants that show yellowing leaves
African violetLower leaves collapse and yellow within days of a watering
Barberton daisyWrinkling rather than yellowing
Bearded irisFaded, yellow-white areas on the sunny side of the plant
Bigleaf hydrangeaPale dry areas across the upper leaves only
Bird of paradiseFaded, yellow-white areas on the sunny side of the plant
Bush lilyPale dry areas across the upper leaves only
Something else wrong with the Florist's cyclamen?
What this does not cover
This page orders a decision tree's results using a plant's sourced care. It has not seen your plant, its pot or its window, and two problems at once are common: that is the usual reason a confident answer turns out wrong. The questions in the diagnosis tool narrow it further than a list can.