Seasonal Tips

Fall and Winter Watering – Quick Facts

Water trees, shrubs lawns and perennials during prolonged dry fall and winter periods to prevent root damage that affects the health of the entire plant. Weakening of plants may cause the plant to die in late spring or summer when temperatures rise and increase the chance of damage or death from insect and disease problems.

Water only when the air and soil are above 40 degrees F with no snow cover. Apply at mid-day so it will have time to soak in before possible freezing at night. South and west exposures are more likely to have trees, shrubs and plants exposed to damaging conditions.

Established large trees have a root spread equal to or greater than the height of the tree. Apply water to the most critical part of the root zone within the drip line.

Newly planted trees and shrubs are the most susceptible to winter damage. Woody trees generally take one year for each inch of trunk diameter. For example, a two inch diameter (caliper) tree takes a minimum of two years to become established under normal conditions.

For more information:

Colorado State University – Extension
www.ext.colostate.edu/pubs/garden/07211.html
Fall and Winter Watering
By J.E. Klett and C. Wilson (7/08)

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