How Does A Self-Watering Planter Work?

2 min read

Super Easy DIY SelfWatering Planter


Self-watering planters have gained popularity in recent years, as they offer a convenient and efficient way to keep your plants hydrated without constant attention. These innovative planters are designed to mimic the natural process of water absorption and distribution in the soil, ensuring that your plants receive the right amount of moisture at all times. In this article, we will explore the inner workings of a self-watering planter and how it can benefit your gardening experience.

What is a Self-Watering Planter?

A self-watering planter, also known as a sub-irrigation planter, is a container that incorporates a water reservoir and a wicking system to deliver water to the plant’s roots. The reservoir is typically located at the bottom of the planter, while the wicking system consists of a capillary mat or wick that draws water from the reservoir and transports it to the soil. This unique design ensures that the plant receives water as and when it needs it, reducing the risk of over or under-watering.

How Does it Work?

The self-watering planter works on the principle of capillary action. When the soil in the planter becomes dry, the plant’s roots release a hormone known as abscisic acid, which triggers the opening of tiny stomata on the leaves. These stomata allow water to evaporate from the leaves, creating a slight suction force that pulls water up from the reservoir through the wick or capillary mat. The water is then distributed evenly throughout the soil, providing the plant with a constant supply of moisture.

The Benefits of a Self-Watering Planter

There are several advantages to using a self-watering planter:

READ ALSO  How To Customize Ikea Pax In 2023

1. Water Efficiency

Self-watering planters are designed to minimize water wastage by providing water directly to the plant’s roots. The reservoir holds excess water, preventing it from evaporating or draining away, ensuring that it is available for the plant to utilize when needed.

2. Time-Saving

With a self-watering planter, you no longer need to worry about constantly monitoring and watering your plants. The reservoir can hold enough water to sustain the plant for several days, depending on its size and water needs. This feature is particularly beneficial for individuals with busy schedules or those who frequently travel.

3. Prevention of Overwatering

Overwatering is a common problem among gardeners, as it can lead to root rot and other plant diseases. Self-watering planters prevent overwatering by delivering water directly to the roots, allowing the soil to dry out slightly between waterings. This helps to maintain the optimal moisture level for the plant’s health and growth.

Choosing the Right Self-Watering Planter

When selecting a self-watering planter, consider the following factors:

1. Size and Capacity

Choose a planter that is appropriate for the size of the plant you intend to grow. Larger plants require larger reservoirs to ensure an adequate water supply.

2. Material

Self-watering planters are available in various materials, including plastic, ceramic, and terracotta. Consider the aesthetic appeal and durability of the material before making your choice.

3. Drainage System

Ensure that the planter has proper drainage holes to prevent waterlogging and root rot. A removable drainage plug can also be useful for adjusting the water level in the reservoir.

READ ALSO  Indoor Succulent Wall Planter


A self-watering planter offers a hassle-free and efficient way to keep your plants healthy and thriving. By mimicking the natural process of water absorption and distribution, these planters provide a constant supply of moisture to the roots, preventing over or under-watering. With the added benefits of water efficiency and time-saving, self-watering planters are a great investment for avid gardeners or those new to the world of plants.