Home Gardening Techniques Protect Your Plants from the Cold with a Wall of Water: A Comprehensive Guide

Protect Your Plants from the Cold with a Wall of Water: A Comprehensive Guide

by Donna
3 minutes read

Protecting Plants from the Cold: Using a Wall of Water


Keeping your plants warm is essential for a long and productive growing season. One effective way to do this is by using a wall of water.

What is a Wall of Water?

A wall of water is a tool that uses water to keep plants warm. It is made of a plastic sheet with hollow tubes. You fill the tubes with water and arrange them around a plant.

How Does a Wall of Water Work?

The water in the tubes absorbs heat from the sun during the day and radiates it back towards the plant at night. It also provides insulation against cold air and wind.

Benefits of Using a Wall of Water

  • Extends the growing season by protecting plants from early spring frosts and fall freezes
  • Allows you to start plants sooner in the spring and get ripe fruits sooner
  • Helps to warm the soil, providing even more protection for plants
  • Is reusable and cost-effective

How to Use a Wall of Water

  1. Fill the tubes with water.
  2. Arrange the wall of water around the plant, making sure that the tubes are evenly spaced.
  3. Secure the wall of water in place with stakes or rocks.

Alternatives to a Wall of Water

While a wall of water is an effective way to protect plants from the cold, there are other options available. These alternatives may not provide as much warmth, but they can be less expensive or easier to use.

  • Plastic bottles or milk jugs: Cut the bottom off a plastic bottle or milk jug and place it over each plant.
  • Glass cloches: Glass cloches provide good protection and allow more light through, but they can be expensive.
  • Wax paper cones: Wax paper cones are a cheaper option, but they may not last as long as other alternatives.
  • Frost blankets or plastic sheeting: Frost blankets or plastic sheeting can be used to cover plants at night when temperatures are expected to drop.

Tips for Using a Wall of Water

  • Use a bucket as a support to keep the wall of water upright while you fill it.
  • Fill and position the wall of water before putting plants in the ground to warm the soil.
  • Avoid placing the wall of water too close to the plant, as this can restrict airflow.
  • Monitor the temperature inside the wall of water to ensure that it is providing adequate protection.


A wall of water is an effective tool for extending the growing season and protecting plants from the cold. By using a wall of water, you can enjoy fresh vegetables and fruits for a longer period of time.

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