Poinsettia problems & how to fix them
Euphorbia pulcherrima
Drooping, yellowing, brown tips, or a plant that just won’t thrive? Here are the most common Poinsettia problems, what usually causes them, and how to turn things around.
Common problems
Root rot
Sitting in water inside the foil gift-wrap sleeve is the classic way poinsettias die. A fungal or bacterial infection of the roots, almost always triggered by soil staying wet too long. Caught early, most plants recover within a few weeks after repotting; if most roots are already mushy, recovery is uncertain.
Phytophthora root rot on a dug-up root ball
Photo: Jerzy Opioła · CC BY-SA 4.0 · Wikimedia Commons
Cold damage
Even a brief chill below about 10 C (a drafty doorway, the car ride home) causes sudden leaf drop. Tissue injury from a cold draft, a chilly windowsill, or a night outdoors below the plant's tolerance. Damaged leaves will not heal, but if the stems and roots survived, new growth typically appears within three to four weeks in a warm, stable spot.
fig leaves killed by a frost
Photo: Famartin · CC BY-SA 4.0 · Wikimedia Commons
Overwatering
Buyers tend to water on a schedule while the plant is barely using water in winter. The soil is staying wet longer than the plant can handle, starving roots of oxygen. If caught before roots start rotting, the fix is simple - let the soil dry out and adjust the routine - and most plants bounce back within 2-3 weeks.
a yellowing lower leaf on a potted Chinese evergreen
Photo: Saurav9656 · CC BY-SA 4.0 · Wikimedia Commons
Underwatering
Letting it wilt hard makes bracts and leaves drop early. The plant is not getting enough water, either from infrequent watering or soil so dry it repels water. Prognosis is excellent - most underwatered plants perk up within days of proper rehydration.
The mistakes that most often kill it
- Leaving it standing in water inside the decorative foil wrapper.
- Placing it in a cold draft or against a freezing windowpane.
- Watering on autopilot through winter when the soil is still wet.
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