Pothos plants are popular for their trailing vines and attractive foliage, making them a common choice for indoor greenery. While adaptable, they are sensitive to temperature extremes. Understanding their specific temperature requirements is important for healthy, vibrant growth.
The Critical Minimum Temperature for Pothos
Pothos, originating from tropical regions, thrive in warmer environments. They prefer temperatures ranging from 65°F to 85°F (18°C to 29°C) for optimal growth. While these plants can tolerate brief temperature drops, the absolute minimum they can endure is around 50°F (10°C). Prolonged exposure below this threshold can quickly lead to stress and damage, as their tropical nature makes them vulnerable to cold.
Signs of Cold Stress and Damage
When pothos plants experience temperatures below their tolerance, they exhibit several indicators of distress. One common sign is wilting, where leaves appear droopy and lack their usual rigidity. Discoloration is also a symptom, with leaves turning yellow, brown, or even black, particularly along the tips and edges. This browning or blackening occurs because cold temperatures cause the plant’s cells to break down. In severe cases, stems might become soft or mushy, indicating cellular damage from prolonged cold exposure.
Protecting Your Pothos from Cold
Preventing cold stress is more effective than treating damaged plants. Placing pothos away from drafty windows and doors is important, as cold air currents can quickly chill the foliage. Avoiding locations near cold air vents or frequently opened exterior doors helps maintain a consistent temperature around the plant. If temperatures drop significantly, ensure plants are not left outside during cold snaps. Checking indoor temperatures, especially during colder nights, can help identify areas vulnerable to chilling.
Caring for Cold-Damaged Pothos
If a pothos plant has suffered from cold exposure, careful attention can aid its recovery. The first step involves moving the plant to a warmer, more stable location, ideally where temperatures remain between 65°F and 75°F (18°C to 24°C). It is important to avoid placing it directly next to a sudden heat source, as rapid temperature changes can further stress the plant. Once the plant is in a suitable environment, assess the damage and prune away any leaves or stems that are dead, blackened, or mushy using clean, sharp tools. Provide appropriate water by checking the soil moisture and only watering when the top inch feels dry, being careful not to overwater a stressed plant. Recovery takes time; monitor new growth as a sign of improvement.