The Pothos (Epipremnum aureum), often called Devil’s Ivy due to its hardiness, is one of the easiest vining houseplants to care for. While forgiving of neglect, managing its water intake is the most important factor for maintaining its health. The exact frequency of watering is not fixed, but depends entirely on the plant’s immediate environment and the soil’s moisture level.
Determining the Right Time to Water
Establishing a fixed schedule for watering a Pothos, such as every seven days, is often counterproductive and can lead to overwatering issues. Instead, the correct time to water is determined by actively checking the soil’s moisture content, which is a far more reliable indicator of the plant’s needs. The most effective method is the “finger test,” where you insert your index finger about one to two inches deep into the potting mix near the base of the plant. You should only proceed with watering when the soil at this depth feels completely dry to the touch.
The goal is to allow the top half of the soil to dry out between waterings. A secondary sign of thirst is a slight but noticeable drooping of the leaves, which become less firm and glossy. While this visual cue confirms the plant is ready for water, relying solely on it means the plant is already experiencing mild stress. Therefore, the soil check is the superior method for consistent care.
Environmental Factors That Change Frequency
The rate at which a Pothos uses water and the soil dries out is significantly influenced by its surroundings, meaning the time between waterings is highly variable. Plants placed in bright, indirect light will photosynthesize and transpire at a higher rate, causing the soil to dry out faster than those kept in lower light conditions. Similarly, a warmer room temperature and low ambient humidity will accelerate the evaporation of moisture from the soil and the plant’s leaves, requiring more frequent hydration.
The season also plays a substantial role, as Pothos plants generally enter a semi-dormant phase during the winter months due to reduced light and cooler temperatures. During this period, the plant’s metabolic rate slows down, requiring less frequent watering. Additionally, the pot’s material affects drying time; porous terracotta pots wick moisture away faster than non-porous plastic or glazed ceramic containers.
Proper Watering Techniques
When the soil check indicates it is time to water, the method of application should be thorough to ensure the entire root ball is saturated. The best technique is to water from the top surface of the soil until the water begins to flow freely out of the drainage holes. This deep watering action flushes out mineral salts that can accumulate in the soil over time.
After watering, it is important to immediately empty any excess water that collects in the saucer or cachepot. Allowing the Pothos to sit in standing water will saturate the lower soil layers, depriving the roots of necessary oxygen and creating conditions favorable for root rot. Using room-temperature water is also recommended, as cold water can shock the root system of this tropical plant.
Identifying and Correcting Watering Issues
The Pothos plant communicates its distress through distinct visual symptoms. Chronic overwatering is the most common issue, typically presenting as yellowing leaves that feel soft and limp, sometimes accompanied by black spots or a mushy stem. This condition is often a sign of root rot, where the roots turn dark, soft, and emit a foul odor.
Conversely, an underwatered Pothos will show leaves that are severely droopy and wilted. The foliage will feel dry and sometimes crispy at the edges, and the soil will be visibly dry, often pulling away from the sides of the pot.
To correct overwatering, the plant must be allowed to dry out completely. If root rot is suspected, the plant should be inspected and repotted in fresh, dry soil. An underwatered plant can be revived quickly by giving it a deep soak until water runs out the bottom.