Florist's cyclamen leaves falling off: causes and what to do
9 results in the diagnosis tree begin with leaf drop, 3 of them marked likely when the answers fit. They are ordered here for Florist's cyclamen (Cyclamen persicum), using what its sources say about cold tolerance, light, soil moisture and watering and 2 problems 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
- Cold tolerance
- H1C — 5–10°CRHS · read 13 September 2026
- Light
- Full sun, Partial shadeRHS · read 13 September 2026
- Soil moisture
- Well-drainedRHS · 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
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 2026Washed-out patches that do not spread to the shaded side
Upper surfaces lose colour while the undersides stay green, and nothing below the top of the plant is touched.
Sun through a window on a still day heats a leaf far above the air around it. Its source describes full sun, partial shade; the glass adds the heat that does the damage.
Telling it apart: Whether the patches grow. Scorch is done once it happens; a leaf spot keeps spreading.
RHS · read 13 September 2026Possible causes, likeliest first for a Florist's cyclamen
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 a reaction to the change
Why: Many plants drop healthy leaves when their light, temperature or draughts change suddenly.
What to try:
- Leave it where it is now rather than moving it again, unless the new spot is plainly too dark or too cold.Useful: min-max thermometer
- Keep it away from radiators, air vents and doors that open to the outside.Useful: min-max thermometer
What would settle it: Whether the dropping slows within a few weeks of the florist's cyclamen staying put. A florist's cyclamen adjusting settles; one with a separate problem keeps losing leaves.
Most likely too much water
- Well-drained RHS · read 13 September 2026
- Loam; pH Acid or Alkaline or Neutral RHS · read 13 September 2026
Why: Soil that is wet two inches down, under leaves that are yellowing from the bottom or falling, points at roots that cannot breathe.
What to try:
- Hold off watering until the top two inches of soil are dry, and check again with a finger rather than by the calendar.Useful: moisture meter
- Empty any water standing in the saucer or the outer pot within half an hour of watering.Useful: pot with drainage holes
What would settle it: Lift the florist's cyclamen out of its pot. Healthy roots are firm and pale; roots that have been wet too long are brown, soft and smell sour.
Less likely for a Florist's cyclamen, still possible
Questions
- What usually causes leaf drop on a Florist's cyclamen?
- For Florist's cyclamen: most likely too little water, most likely a reaction to the change and most likely too much water. 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.
- How can I tell which one it is on my Florist's cyclamen?
- Which leaves are falling, and what do they look like? Green leaves, several at once; Yellow leaves, the oldest first; Dry, brown leaves; A tree or shrub that loses its leaves each autumn, and it is autumn.
- What do Florist's cyclamen's sources say about its cold tolerance?
- RHS: H1C — 5–10°C.
- 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 leaf drop
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.