Swingle Lawn, Tree & Landscape Care has proudly served Denver and the Front Range of Colorado since 1947. From lawn care, tree service and pest control, to landscaping and holiday lighting, our highly trained and certified team of experts are ready to go to work for you. Our residential and commercial services includes: Lawn care Fertilization and planting Weed control Tree services Tree trimming, cabling and bracing Tree and stump removal Plant health care and disease control Pest and insect control Christmas and event lighting Important Information About Your Colorado Landscape: Emerald Ash Borer is considered the most destructive forest pest ever seen in North America. It is responsible for killing more than 50 million ash trees in over 20 states. Just in the Denver area alone, there are 1.45 million ash trees at risk. If you have an ash tree, there are preventative measures you can take.