Watering trees through winter is all about balance. Over-watering can lead to root rot and other issues while adding unnecessary costs to your water bill. Under-watering can also be a big issue, as even though your water should be dialed back for the winter, it is important that trees still receive adequate hydration. Not only does this water keep your tree growing on a daily basis, but it protects it from drought-related damage moving through the season.
While we often see some winter rain across the Valley, this is not guaranteed. Therefore, despite cooler temperatures, it is important not to rely on the possibility of rain alone to water your trees in the winter. Your irrigation system should still be set to water non-desert adapted trees 1-2 hours when moisture levels are low— a soil probe may be used to test your soil’s moisture levels if you are unsure. Desert adapted trees are typically drought tolerant, therefore these irrigation areas may be shut-off. Additionally, if a freeze is in the forecast, water your plants and trees to help keep moisture in the leaves