Armadillos in the Fall Sep 23, 2025

Armadillos follow a fascinating and unusual cycle compared to many other wildlife species. Their mating season takes place in midsummer, typically July through August, but unlike most animals, they don’t immediately begin developing young. Through a process called delayed implantation, fertilized eggs remain dormant until winter, allowing births to occur at a time when survival is more likely. This means that while breeding has ended by fall, armadillos remain highly active as they prepare for the colder months ahead.

During fall, soil retains warmth and moisture, creating an ideal environment for the insects and grubs that armadillos feed on. To access this food source, they dig relentlessly, leaving behind clusters of small, cone-shaped holes scattered across lawns and gardens. Homeowners often notice these disturbances overnight, as armadillos are primarily nocturnal and do much of their foraging under cover of darkness.

In addition to digging in open areas, armadillos are known for their persistence when it comes to reaching cooler, shaded soil. They will often push beneath fences, patios, decks, and even concrete slabs to establish burrows. Once established, these burrows may be used repeatedly, and over time they can expand significantly. In some cases, extensive burrow systems compromise the integrity of foundations, weaken patios, or create hazards in the yard where the ground becomes unstable.

For property owners, armadillo activity in the fall is more than just a nuisance. While the immediate issue may be unsightly holes in the lawn, the long-term risks include landscape damage, soil erosion, and structural problems near buildings. Because their behavior is predictable and tied to seasonal cycles, fall is the best time to address armadillo activity before burrows expand or become permanent fixtures.