Colorado is known for its high elevation. Denver sits at 5,280 feet above sea level, meaning the area experiences lower oxygen levels, thinner soil, colder nights, and stronger UV rays.
Tree growth at high altitudes differs from tree growth at lower elevations. Knowing the altitude’s effects on trees, the best trees for high elevations, and specialized Front Range tree care techniques can help ensure your backyard thrives despite differences in sea level.
How Elevation Affects Tree Growth
Tree growth at high altitudes differs significantly from that at lower elevations. Low precipitation on the east side of the Rockies makes native tree growth difficult, and shallow, rocky soils can cause poor drainage and compaction. These conditions make proper water management a top priority.
The growing season for trees in Colorado is shorter, leading to delayed bud break and slower maturity.
Best Trees for Mile-High Altitudes
The first step in tree planting in Denver is to choose species that can best adapt to wind, drought, and thin soils. Here are some suggestions:
- Bur oak (Zones 4-8)
- Hackberry (Zones 2-8)
- Kentucky coffee tree (Zones 3-8)
- Pinyon pine (Zones 6-8)
- Rocky Mountain juniper (Zones 3-7)
- Honeylocust (Zones 3-9)
- Western catalpa (Zones 4-8)
Be aware! Some mountain species, like subalpine fir, struggle in urban Front Range hardiness zones (Zones 4-5).
Common Mistakes in High-Elevation Tree Planting
Tree planting in Denver can be tricky due to its complex climate. Make sure to avoid these common mistakes:
- Planting trees suited to sea level or mountain peak elevations in mid-altitude neighborhoods
- Overwatering in compacted soil with poor drainage
- Selecting fast-growing species that can’t tolerate drought, UV, or wind exposure
High-Elevation Tree Care FAQs for Denver Homeowners
Mulch and regular watering can improve root health, while protective coverings such as burlap or light-colored guards can help protect trees from wind and sunscald.
The optimal times for tree planting in Denver are spring and fall when temperatures are not as extreme.
Mountain trees require different climate conditions than those in Denver. Mountain trees need well-drained, moist soils, moderate sunlight, and protection from harsh winds to grow.
Not all trees are built for altitude. Schedule a visit with your local Denver Davey arborist to receive tree recommendations tailored to your elevation, soil, and microclimate.
We have offices throughout the Denver area in Englewood, West Denver, Southeast Denver, North Denver, East Denver, Boulder, Northern Colorado, and South Fort Collins.
