Best Self Watering Planters – 2021 Buying Guide

#3 – Keter Easy Grow 31.7 Gallon Raised Garden Bed with Self Watering Planter Box 

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Self Watering Planter Box


If you have ever wondered if the convenience of automatic watering is available for vegetables, look no further. The Keter Easy Grow 31.7 Gallon Raised Garden Bed with Self-Watering Planter Box has the size and features to be the perfect self-water vegetable planter.

This planter measures 44.9″ W x 19.4″ D x 29.8″ H, making it plenty big to pack with several rows of lettuce, radishes, herbs, tomatoes, and more. While you can use it for raised-bed gardening anywhere, it is well-suited for apartment balconies or patios. The rattan pattern complements outdoor furniture.



  • Eliminates the need for weeding
  • Prevents back and joint strain
  • Saves space
  • Looks great
  • Makes watering easy


  • Some customer complaints about the legs breaking
  • Leakage can be a problem


  • Easy assembly
  • Complete water system with reservoir to prevent overwatering and root decay
  • A drainage system that can be opened or closed
  • Water level gauge
  • It can be used indoors or out

Size of the Water Reservoir

The size of the water reservoir is unspecified. Product information does not specify much about its self-watering capabilities. Water can accumulate in the planter after excess rain, allowing users to take advantage of the drainage plug.

Oxygen Circulation

The unit has a tray beneath the dirt that catches water and hydrates the plants.  When used outside, keeping the drainage spigot open allows excess moisture to escape. If the water is collected, it can be reused to water the plant.

Ease of Use

There is an indicator stick with a sponge on the bottom that will expand when saturated. If the small leaves on the indicator stick are even with the top of the hole, you need to water. For this to work, you should fill the planter with water through a standing pipe.


Currently available for $100 on Amazon, this item is popular at garden centers everywhere, often at discounted prices.

Comparison to Other Self-Water Planters

One of the most appealing aspects of the Keter as a self-watering vegetable planter is its size. Many Amazon reviewers used this for tomatoes or a selection of several vegetables such as lettuce, Swiss chard, herbs, radishes, garlic, and more. It functions like a traditional raised garden bed. Similar choices might include the Sunviv Outdoor 2, or the 2-tiered Vingli Square Raised Self-Watering Garden Bed.

Aside from these oblong planters, another way to grow vegetables is to do container gardening using smaller self-watering containers such as those made by Lechuza. The Lechuza 15222 Cubico Cottage 30, a tall container, or the 31″ long Lechuza Balconera Cottage 80 are excellent choices.


While the Keter does not offer as sophisticated a self-watering system as other planters described in this review, it has over 3,200 reviews on Amazon, with 91% of them garnering 4- or 5 stars. Many who praised it are repeat buyers, and Amazon has a hard time keeping this in stock.

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