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What are Self-Watering Planters, and How Do They Work?

Self-watering planters are one of the most popular types of indoor plants. Not only do they allow you to grow greenery, but they also tend to be much cheaper than other houseplants. They have been around for centuries but have recently gained popularity because of their ease of use and growing ability. Self-watering planters come in various shapes and sizes, so it is hard to believe that they are not as well known as other gardening plans. Like houses, a self-watering planter is not easy to install.

What Are Self-Watering Planters?

Self-watering planters are containers that can be planted with a variety of plants. They fill up with water when the plant roots need it, then release it back into the soil as needed. This allows you to water your plants without mess or upkeep.

The reason it's called self-watering is that the plants will water themselves. The water comes from rain, dew, or plant roots. Some of these planters even come with hoses or tubing that you can use to make sure that the water is always available for the plant to use.

The self-watering planter is a great solution for those who have limited space or don't want to water their plants. The concept of self-watering planters is simple: the plant needs water to create its supply.

This means that you don't have to keep watering your plants as often. If you get a sunny day, your plants will be able to take in more water than they would if you were constantly filling up their pots with water from a watering can every couple of days.

They are also a great way to save water. By watering only when the soil needs it, you're not wasting water by letting it run outside the pot.

Self-watering planters use an automatic system to regulate how much water is released from their reservoir and how quickly it drains back into the soil. The reservoir usually has a hole in the bottom where excess water can drain out, which makes for easy cleanup after you've watered your plants.

How Self Watering Planters Works.

A self-watering planter is a container that has holes in the bottom. Water flows below and goes up through the soil, nourishing your plants. Here are several ways how self-watering planters work.

Construct The Water Reservoir.

Self-watering planters are designed to keep the soil moist and prevent water from running out of the planter.

The self-watering planter is a type of pot that contains a reservoir. The water level in the reservoir is controlled by a mechanism that allows water to flow into the planter but not back out again. The reservoir holds enough water for several days for most plant species.

The mechanism controlling water flow is usually a ball valve, which allows some water to flow from one side of the ball valve and keep flowing until it reaches its target. As soon as it has reached its target, it stops flowing and seals itself off again.

When it rains, the water is released into the reservoir. It then flows through a tube that leads down into your pots or planters and sprays out onto your plants' roots. This is what makes them "self-watering."

Planting Containers.

Self-watering planters do not need electricity or other outside resources. They are typically made from plastic or ceramic and can be decorative or functional. Some are elegant, while others are made with a purpose, such as providing shade for plants on hot days or keeping them cool during summer when temperatures rise above 80 degrees Fahrenheit (26 Celsius).

The great thing about these plants is that they don't require maintenance once planted in their containers. You need to keep checking them so they don't dry out too much and die from a lack of moisture.

Capillary Action

Self-watering planters use a system that allows the plant's root system to grow through capillary action. The roots will draw water from the soil as needed and then send it back into the soil as waste. This is accomplished with a porous material that allows absorption but not liquid transference. When no water is left in this capillary tube, the plant will die unless it has access to more water.

Connect The Irrigation Tube.

Second, insert the watering tube, an opening to pour water directly into the reservoir. This can vary from a simple tube placed in the corner of a planter or an opening in the container wall that gives direct access to the reservoir.

Some tubes have caps to keep pests and debris out of the reservoir. The water tubes also ensure it extends above the soil from the water chambers. This enables you to fill the chamber with water as needed to ensure that only water passes through the pipe and wrap mesh over both ends. The soil in the planter is not watered directly. Instead, the water flows into the soil through an underground tubing system.

Overflow Mechanism

If the reservoir is full, all planters should have an overflow mechanism allowing water to drain. This keeps plants from sitting in water (which would rot them quickly) if you accidentally overfill the reservoir and keeps water at the proper level after heavy rain.

The self-watering planter comes with one or more cups that have holes in them. These holes are connected by plastic tubing that runs from the top cup down to the bottom, which meets up with another hole in a second cup. This process repeats itself continuously until your plant's needs are met.


The larger capacity of a self-watering planter makes it the preferred pot for gardeners with large plants or growing several plants at once. These planters allow you to get more done in a little while, allowing your plants to grow more quickly and efficiently. Consider a self-watering planter if you're interested in keeping your plant's health at its peak while conserving water and soil. Plant self-watering containers are an easy way to ensure your plants are well-hydrated. We'd recommend them to anyone who has an issue with over or underwatering their home plants.

Elevate your landscape with Urban Pot planters. High-quality aluminum, stainless steel, corten steel, resin, metal, flowerboxes, fiberglass and concrete options available. Kindly check through our frequently asked questions and blog for more information, or contact us for further inquiries. Also, you can view our condo projects and portfolio achievement.


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