Frost and Freeze Plant Protect and Care
Most of our native plants, like inland sea oats, need no protection from freezing weather. We prune back in spring to make way for new growth. Until then, we can leave perennials alone to harbor overwintering creatures and pollinators and to protect plant roots. Also, pruning too early during weather swings in early winter can prompt new growth that can be killed by a hard freeze.
A few guides
Travis County Texas A&M AgriLife frost and freezes protection
The Natural Gardener’s Guide to Maintenance after Freezes
Lady Bird Johnson Wildflower Center native plant tips
Texas A&M Caring for Trees in the Cold
Freeze prep tips from Texas A&M Forest Service and KXAN