Potted Mums Wilting? Why Leaves Dry Out and Flowers Droop — and How to Make Them Last
Why potted chrysanthemums wilt or get yellow, dry leaves, how to revive them, and how to keep the flowers going and overwinter the plant.
Potted mums covered in blooms are an autumn favorite, but it's common for them to wilt within days. Water is usually the cause, and most plants recover if you catch it early.
The most common cause is underwatering
Mums sold in bloom are root-bound in small pots, so the soil dries very fast — sometimes within a day or two on a sunny balcony. If leaves and flowers droop all at once and the pot feels light, the plant is thirsty.
- Check the soil every day and water thoroughly, until it drains out, when the surface is dry
- If it has already wilted, soak the pot in a basin of water for 20–30 minutes to rewet the root ball; it usually perks up within hours
- Water the soil, not the flowers and leaves — wet blooms spoil quickly
Check the wrapping and saucer — overwatering
Gift mums often come with the pot wrapped in foil or plastic. Water pooling inside the wrapping drowns and rots the roots, and the plant wilts and yellows even though the soil is wet. Remove the wrapping or poke holes in the bottom, and empty the saucer after watering.
Too little sun shortens flowering
Mums love sun and last longest with at least six hours of direct light a day. In a dim room, buds may not open and flowers fade fast. Keep them on a bright balcony or windowsill during the day, and away from heaters — cooler temperatures make the blooms last longer.
Lower leaves turning yellow or brown
A few lower leaves drying out is common. It gets worse with swings between too dry and too wet, or when dense foliage has poor airflow. Pick off dead leaves and space pots apart so air can move.
Wilting on one side or white fuzz at the base — disease
- One side or a few stems yellow and wilt and don't recover after watering → possibly a vascular wilt disease. Recovery is unlikely, so keep the plant away from other pots
- The base of the stem browns, with white cottony growth and tiny tan to brown pellets on the soil → a fungal disease such as southern blight. Discard the plant with its soil and don't reuse that soil
- Clusters of tiny insects on new shoots and buds → aphids. Wash them off with a spray of water
After flowering and over winter
Deadheading spent flowers helps the remaining buds open. When flowering is over, cut the stems back to about 10 cm above the soil, keep the pot somewhere cool but frost-free such as a balcony, and water just enough that the soil never dries out completely. Depending on the variety, new shoots appear in spring.
Chrysanthemums can upset cats and dogs if eaten, so keep them out of reach. For watering, use the watering calculator on GreenPic's chrysanthemum page and get reminders.