INTEGRITY IN ACTION
Spring Tree and Plant Healthcare Services
What to do in the spring to keep trees and lawns healthy?
Ross Tree, with its extensive experience and expertise, prepares residential and commercial properties for Denver’s hot, dry summers with its comprehensive spring plant healthcare offerings. These include lawn fertilization, our innovative Tri-Level Tree Fertilization Program, tree and lawn insect control, and proactive tree pruning. Why not call a licensed, insured, trusted tree and plant healthcare company with an A+ BBB rating? For convenience, we accept all major credit cards. Click the request service button above to fill out a request tree service form or call 303-871-9121.
The amount of spring moisture determines what type of year yard trees will have in Denver. Wet springs set the conditions for active tree insect infestations, while dry ones stress trees, leaving them susceptible to tree mites and cankers. May 2023 was particularly wet, creating conditions that fostered the growth of rare tree fungi not typically seen in Denver. Ross Tree’s General Manager discusses what his arborist and crews are seeing in Denver in 2025 and previous years.
Request Service — Ross Tree
Ross Tree recommends the following services to maintain healthy yard landscapes in the spring.
Tri-Level Tree Fertilization Program
In 2024, Ross Tree announced the Tri-Level Tree Fertilization Program, which complements our spring tree care offerings. We now offer three deep root feedings a year versus two because Denver’s growing season is getting longer, and tree insects emerge earlier. The first summer feeding starts in May. Click here for more information about Ross Tree’s Tri-Level Tree Fertilization program.
Proactive Tree Pruning
Proactive tree pruning is a vital component of Ross Tree’s spring plant healthcare offerings, which involves removing dead or hazardous branches. Structural training creates a dominant leader with subordinate side branches and secondary limbs. Trees with good structure can withstand Denver’s late spring snow and windstorms. Another benefit of proactive tree pruning is that our climbers often find tree insects and disease problems when high in trees that are not visible from the ground. Click here to view Ross Tree’s Standards-Based Tree Pruning Handbook.
Tree Insect Control
Most tree insect treatments start in the spring when adult insects emerge. Ross Tree was the first tree company in Denver to offer tree injections, ensuring that only the tree gets the product, not the surrounding environment. Homeowners with Ash trees should get them treated now for the Emerald Ash Borer. The borer arrived in Denver in 2025 and kills all untreated Ash. Download our helpful tree insect calendar. It helps homeowners identify what insects are munching on their trees.
Lawn Fertilizing
The first fertilization of the year is in the spring, which boosts grass growth and slows the emergence of crabgrass and other weeds. A healthy lawn in the spring lays the foundation for the grass to flourish when the weather gets hot and dry. Click here to find out more about Ross Tree’s lawn care programs.
Ross Tree Company
Ross Tree is a locally owned and licensed Denver tree company that has been in business since 1978. We offer tree pruning, tree insect control, and plant health care services. Why not call a licensed, insured, trusted tree company with an A+ BBB rating?