Pothos, a popular indoor plant, requires watering adjustments during winter. Understanding these changes is important for maintaining a healthy plant. The frequency of watering depends on environmental factors and the plant’s physiological state.
Why Pothos Watering Changes in Winter
Pothos plants naturally adapt their growth to seasonal changes, entering a semi-dormant phase during winter. This period has reduced light intensity and shorter daylight hours, signaling the plant to slow its metabolic processes. Lower indoor temperatures also contribute to this reduced activity.
During this time, the plant’s demand for water significantly decreases. Its growth rate slows, leading to less transpiration, the process of water evaporation from plant parts. Consequently, the soil retains moisture longer, necessitating reducing watering frequency to prevent overhydration.
How to Determine Watering Needs
Watering pothos in winter requires checking soil moisture, not a strict schedule. The most reliable method is to feel the soil directly. Insert your finger 1 to 2 inches deep into the potting mix; if it feels dry, the plant may need water.
For larger pots, check deeper (3 to 4 inches) or use a wooden dowel. If the dowel comes out clean and dry, water is needed. You can also observe subtle cues like slightly drooping leaves, which signal thirst. Avoid waiting until leaves are severely wilted or crispy, as this indicates significant dehydration.
Factors Affecting Winter Watering
Several factors influence how often your pothos needs water. Pot size plays a role, with smaller pots drying out faster due to less soil volume. The type of potting mix also matters; well-draining mixes, often containing perlite, allow water to pass through more quickly than denser, moisture-retentive soils.
Indoor humidity levels affect evaporation rates from the soil and leaves. Higher humidity means less water loss, while dry indoor air, common with winter heating, can lead to faster drying. Room temperature also influences water needs; warmer rooms cause soil to dry more rapidly than cooler environments. Less light exposure in winter reduces the plant’s overall water demand.
Signs of Improper Winter Watering
Both overwatering and underwatering can stress a pothos, especially during winter. Overwatering often manifests as yellowing leaves, particularly older ones, and a limp or soft appearance. The soil may remain soggy, and in severe cases, stems can become mushy, indicating root rot from oxygen deprivation in waterlogged soil.
Conversely, an underwatered pothos shows dry, crispy, or browning leaf edges, often starting at the tips. Leaves may also appear severely wilted or droopy, and the potting mix will be bone dry, possibly pulling away from the pot’s sides. Ensure the soil has adequate time to dry out between waterings.