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Poinsettias and Cold Windows: A Dangerous Combination

Poinsettias leaned against a cold window pane (20°F outside). Owner thought cold storage might prolong life.

Terminology and Damage

"Cool storage" (50–60°F) helps some plants; "cold storage" below 50°F kills poinsettias. Leaves touching freezing glass die. Poinsettias are semi-tropical—minimum 55°F.

House Plants: Cold Windowsill Woes: Artificial Lights or Heat Mats Are Better; Monstera Care: Pale New Leaves, Brown Edges, and Light Requirements; Ming Aralia Leaf Drop After Relocation: It's Not the Same Light; Poinsettia Cold Damage: Not Suitable for Cold Storage; Poinsettias at Window in Kentucky: Same Cold Risk; Cold Damage Recovery for Dracaena Marginata; Timing Tropical Plant Purchases: Avoid Cold Weather Shipping Shock; Assessing Cold Damage in a Coconut Palm; Alocasia Leaf Spots: Cold Damage from Open Window; Cold Damage to Plants: Protection Strategies and Frost Date Averages

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