How to Keep Trees From Freezing By Running Sprinklers

Some kinds of trees can tolerate very cold temperatures, and others are more susceptible to damage from frost or snow. Citrus trees are subtropical, and while they are usually well-adapted to temperate areas, a hard freeze that lasts for several hours can kill them. Running sprinklers is one method of protecting frost-tender trees from damage. As long as the water keeps running, it cannot freeze, thereby keeping the tree protected.

Thermometer
Hoses with sprinkler attachments

Instructions

- 1
  Set one or more sprinklers just outside the edge of your tree where the branches extend.
- 2
  Test your sprinklers before the first forecast frost to ensure they send water to the highest branches of your tree. If they fail to reach the height you need, substitute a more powerful sprinkler.
- 3
  Check the forecast nighttime low temperature every day during late fall through early spring. When the forecast calls for temperatures below 32 degrees Fahrenheit, watch your outdoor thermometer and plan to turn on your sprinklers when the mercury drops to just above freezing, or about 34 degrees Fahrenheit.
- 4
  Run the sprinklers to protect your tree from frost damage until the temperature rises above the level that causes damage to your tree.
- 5
  Repeat your frost protection treatment with sprinklers every night when freezing temperatures are forecast.

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