Though there are many insects found in the desert, not many can damage a tree beyond cosmetic issues. Thrips and spider mites typically discolor leaves, but tree borers can cause real damage. Here is a look at how to identify these common desert tree insects:

Tree Borers

Tree borers are one of the only damaging tree insects found in Arizona. There are Flatheaded Borers, Roundheaded Borers, and Root Borers; the well-known Palo Verde beetle is a Root Borer. Palo Verde Borers can be very dangerous to the health of a tree and nearby landscapes. They are rarely seen above ground, and they will continually feed on a tree’s roots. Over their lifetimes, Palo Verde Borers can kill a full-grown tree. They can grow up to 6 inches long, have extra-long antennae, and appear dark brown in color.

Thrips

Thrips are small and thin, reaching less than half an inch in length. Though they will rarely kill a full-grown desert tree, thrips can cause a tree’s leaves to curl and remain stunted. Thrips feed on new leaves, typically in the spring, and suck out the tree’s sap from the stems. If there is a large infestation of thrips, then a tree can suffer. Professional landscapers have the necessary insecticides to treat thrips and prevent tree damage.

Spider Mites

Spider mites will flourish during the hotter times of May and June. They look like tiny, moving dots, but they also produce a web between leaves and stems. They are hard to spot, but by using a white piece of paper, landscapers can see them moving around. Spider mites suck out sap, similar to thrips, and the leaves will turn a bronze color in response.

Complete Landscaping specializes in a number of Tucson landscaping services, including tree care and landscaping for public works and commercial locations. If there is an insect or bacteria suspected of damaging a tree, then please call us at (520) 323-8918. We will diagnose and treat the tree and surrounding landscape to the best of our ability.