Regional Pest Pressure Guide for Houston, TX

What this means if you live in Houston: hardiness zones measure the average coldest temperature an area sees each winter — which directly determines whether insects and their eggs survive the cold season or die off and have to reestablish each spring. Houston's winters are about middle-of-the-pack (#5 of 20 we track) for mildness. Milder winters mean less die-off, so pests here get a head start each spring and stay active over a longer stretch of the year than in a colder city — worth factoring into how early you schedule preventive treatment, not just how you react to an active problem.

Source: USDA Plant Hardiness Zone Map data (PRISM Climate Group, Oregon State University, under USDA cooperative agreement), ZIP 77002. This describes regional climate conditions, not a specific species inventory for your address — a local inspection is the only way to identify what's actually present on a given property.