Preparing Your Albuquerque Yard for Fall

Albuquerque's first frost typically arrives in late October, though the East Mountains and higher elevations can see freezes as early as mid-October. The two-week window between mid-September and early October is the best time to complete fall prep before temperatures drop in earnest.

Irrigation winterization is the most time-sensitive task. Drip lines left full of water through a freeze cycle can split at fittings and emitters, turning a minor maintenance call into a full system repair. We recommend blowing out all irrigation lines with compressed air by October 15 in most ABQ neighborhoods, October 1 in the foothills.

Cutting back perennials is more nuanced than most guides suggest. Salvias, penstemons, and ornamental grasses should be left standing through winter: the dead foliage insulates the crown from freeze damage and provides winter habitat for beneficial insects. Cut them back to 4–6 inches in late February, just before new growth emerges.

Roses and tender perennials like lantana are the exception. Cut lantana to the ground after the first frost and mound 4 inches of mulch over the root zone. It's not reliably cold-hardy here, but it survives most Albuquerque winters if the crown is protected.

Mulching is worth doing in fall rather than spring. A 2–3 inch layer of wood chip or shredded bark applied before the ground freezes moderates soil temperature, reduces moisture loss through winter, and breaks down to feed soil microbes by spring. We use locally-sourced wood chips from tree services when available.

Finally, fall is a good time to aerate and overseed buffalo grass or blue grama lawns. Both grasses go dormant in winter but resume aggressively in spring. Aerating now lets the seed make soil contact before freeze-up, and the roots establish through winter for a denser stand next year.