Tree Care Guide — Watering

Essential Watering for Colorado Trees

Colorado receives around 40% of the national average of moisture each year. Everything about tree health here starts with water.

Updated
Migrated from GWTC Essential Watering, 2026

Water is essential to trees and shrubs. In Colorado we receive around 40% the national average of moisture each year. Winter snowstorms can be far and few between, with periods of long, hot dry spells. Without enough soil moisture trees will become dehydrated, stop growing, and go into decline.

It's vital to provide an adequate amount of water — not too much or too little — for tree and shrub health and growth.

Why watering matters here

  • Dry spells: Colorado's persistent dry spells make watering essential to replace lost moisture, support nutrient uptake, and keep trees healthy and resilient.
  • Heat stress: regular watering prevents heat-stress-induced decline by helping trees regulate temperature and maintain healthy growth.
  • Nutrients: watering delivers balanced, nutrient-enriched hydration that strengthens roots and promotes healthier growth.
  • Longevity: consistent hydration extends the life and long-term health of trees and shrubs year-round.

What water actually does

  • Water loss: 90% of water in plants is lost through transpiration — the process where water exits the leaves and moves into the atmosphere as air-cooling vapor. That loss has to be replaced by uptake in the root system.
  • Overall plant health: water is essential to plant growth and development. Healthy plants can defend themselves against pests and other environmental stressors.
  • Nutrient transport: water carries essential nutrients and minerals from the soil through the plant.
  • Food: water fuels photosynthesis, where plants use sunlight to manufacture food from carbon dioxide.

How a watering plan is built

  • Personalized schedules based on your soil type, landscape and tree species.
  • Nutrient-infused hydration that boosts both saturation and overall vitality.
  • Professional monitoring, with arborists checking moisture levels and adjusting the program as needed.
Great Western Tree Care

When you want a professional opinion

The Root exists to help you understand your landscape. When a tree needs hands-on evaluation, a Great Western arborist can look at it in person.