The Pothos plant (Epipremnum aureum) is a popular houseplant known for its trailing vines and ease of care. Pothos generally prefers consistent soil moisture, avoiding completely dry or overly saturated conditions. Terracotta pots, made from unglazed, porous clay, actively pull moisture from the soil, allowing it to evaporate through the sides—a process known as wicking action. Pothos can thrive in terracotta, but the pot’s moisture-wicking nature requires the grower to be more vigilant in watering.
Understanding Terracotta’s Porosity and Pothos Needs
Unglazed terracotta is fired at a lower temperature, leaving microscopic pores across the clay surface. This porous structure serves as a natural dehumidifier for the soil, drawing out excess water and encouraging superior air circulation around the roots. This breathing action prevents soil saturation, which is the primary cause of root rot in Pothos.
Pothos prefers soil that remains evenly moist, only drying slightly between waterings. The aggressive wicking action of terracotta causes the soil to dry out significantly faster than in a plastic or glazed container. This rapid moisture loss can lead to under-watering stress, especially in warm or low-humidity environments.
Essential Adjustments for Watering in Terracotta
Successfully growing Pothos in terracotta requires adjusting watering frequency to counteract the pot’s rapid drying effect. You will likely need to water more often than you would in a non-porous container. Checking the soil moisture regularly, rather than relying on a fixed schedule, is the best practice.
Before watering, insert a finger or moisture meter two to three inches into the soil to assess dampness. If the soil at that depth feels completely dry, water thoroughly until liquid flows freely from the drainage hole. Avoid allowing the soil to become entirely bone-dry for extended periods, as this stresses the Pothos and causes yellowing or drooping leaves. Terracotta is a good choice for those who tend to overwater, as the material acts as a buffer by absorbing and evaporating excess moisture.
Managing Mineral Buildup and Root Adhesion
Terracotta pots often develop a white, crusty residue called efflorescence on the exterior. This buildup is caused by dissolved salts and minerals from tap water and fertilizer wicking out of the soil and crystallizing as the water evaporates. While generally harmless to the Pothos, this mineral buildup can eventually clog the pot’s pores, reducing breathability. The residue can be scrubbed off with a stiff brush and a solution of one part white vinegar to four parts water.
The second issue is that Pothos roots can adhere to the rough, porous interior wall of the terracotta pot. This adhesion makes repotting difficult, potentially causing root damage if the plant is forcefully pulled from the container.
When to Choose Different Container Types
While terracotta is a good option, it is not always the best choice for every grower. Plastic pots are non-porous, retaining moisture for a much longer time. They are a better alternative for growers who travel often or tend to forget to water their plants. Glazed ceramic pots function similarly to plastic, as the exterior glaze seals the clay, eliminating the wicking effect. Terracotta is most suited for growers in high-humidity climates or those who prefer the rapid dry-out cycle to prevent overwatering issues.