The Monstera Deliciosa is a popular houseplant known for its stunning tropical foliage. Proper watering is frequently the greatest challenge for new owners, but the solution is not a fixed schedule. The correct watering frequency for this plant, native to the tropical forests of Central America, depends entirely on the specific environment in which it is growing.
How to Check Soil Moisture
Determining the right time to water must be based on the soil’s moisture content, not a set number of days. The most reliable, low-tech method is the “finger test,” which involves inserting a finger two to three inches deep into the potting mix. If the soil at that depth feels dry, it is generally time to water the plant.
The goal is to allow the top 50 to 75% of the soil volume to dry out before rehydrating the plant. For a more precise measurement, a soil moisture meter can be inserted into the pot to gauge moisture levels deep within the root zone. Alternatively, a wooden chopstick or skewer can be inserted and left for a few minutes; if it comes out clean with no clinging moist soil, the plant is ready for a drink.
Environmental Factors That Change Frequency
Several external conditions influence how quickly your Monstera’s soil dries out and, therefore, how often you need to water. Light exposure is a significant factor, as plants in bright, indirect light use water much faster for photosynthesis than those placed in lower light conditions. A Monstera positioned near a sunny window will require more frequent watering than one sitting further inside a room.
Seasonal changes cause a natural shift in the plant’s needs, requiring more water during the spring and summer growing season when it is actively pushing out new leaves. Conversely, during the fall and winter months, when growth slows, the plant enters a period of semi-dormancy and needs significantly less water.
The type of pot also plays a role. Porous materials like terracotta allow water to evaporate through the sides, causing the soil to dry more quickly than non-porous plastic or glazed ceramic containers.
The ambient temperature and humidity level in your home also affect evaporation rates. Warmer rooms or those with low humidity will cause the soil to dry out faster, requiring more frequent watering. Additionally, a chunky, fast-draining soil mix will necessitate more frequent watering compared to a dense, moisture-retaining soil.
Best Practices for Watering Technique
Once the soil check indicates it is time to water, the technique used should ensure a deep, thorough saturation of the entire root ball. Water should be poured slowly over the surface of the soil until it begins to drain freely from the pot’s drainage holes. This method, known as top watering, flushes out accumulated mineral salts and ensures moisture reaches all the roots.
After watering, discard any excess water that collects in the saucer or cachepot within 15 to 20 minutes. Allowing the plant to sit in standing water can quickly lead to root rot.
Using room-temperature water is recommended, as cold water can shock the plant’s root system. If your local tap water has high mineral content, occasionally letting it sit out overnight to allow chlorine to dissipate or using filtered water can help prevent mineral buildup in the soil over time.
Recognizing Signs of Watering Stress
Visual cues from the Monstera’s leaves and stems can help diagnose whether an issue is caused by overwatering or underwatering. Overwatering is often signaled by yellowing leaves, which typically appear first on the older, lower parts of the plant. In severe cases, the stems may feel soft or mushy, and the soil may develop a foul odor.
Signs of underwatering include a general drooping or wilting of the leaves, as the plant lacks turgor pressure. The leaves may also develop brown, crispy edges or tips. If underwatering is suspected, a deep watering should revive the plant within a few hours, while signs of overwatering require immediate action to dry out the root ball.