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Best time to deep root water large established trees #922557

Asked December 01, 2025, 11:39 AM EST

What time of year and what time of day is best for deep root watering by a professional company? I have 6 large established trees.

Jefferson County Colorado

Expert Response

Hi Lynne,

The Colorado State Forest Services recommends any time when the temperature is above 40 degrees and snow has melted. Below is the resource if you'd like to read more. 

https://csfs.colostate.edu/2022/02/28/water-trees-in-winter-during-drought-conditions/

Thanks!

An Ask Extension Expert Replied December 02, 2025, 5:54 PM EST

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