Tree · North Texas care guide
Quercus shumardii
Nursery Pro tip: Fast-growing native oak with reliable red fall color. Plant in fall or winter.
The fast, upright red oak that turns scarlet in November — the best fall color of any large tree that thrives in our soil. Straight trunk, high canopy, two to three feet of growth a year once it gets going.
Full sun, deep soil, and 15–20 ft from structures. Handles Blackland clay and mild alkalinity well (it is the red oak to plant here; pin oaks and other northern red oaks turn yellow in our pH).
Fall and winter planting gives it a whole season of root growth before the heat. Wide, shallow hole; root flare at or slightly above grade; native soil backfill; Root Stimulator; 3 inches of mulch in a wide ring.
Two deep soakings a week the first summer, one a week the second and third. Established trees only need help in a drought like 2011 or 2022. Never let a newly planted oak dry out in August.
Slow-release tree fertilizer in spring for the first three years; after that lawn feeding covers it. Chelated iron or sulfur if leaves show green veins on yellow (uncommon on Shumard, common on the wrong oak).
July through January only — never February 1 through June 30 (oak wilt) — and paint every cut right away. Red oaks are the most oak-wilt-prone of all. Establish one central leader early and remove crossing branches while they're pencil-sized.
Oak wilt (winter pruning, no wounds in spring). Sunscald on the southwest side of a young trunk — wrap it or leave low branches the first two years. Hypoxylon canker hits drought-stressed trees, so keep watering in dry summers.
The go-to shade tree for a new home lot. Combine with a Chinese pistache or cedar elm for staggered fall color; underplant with Asian jasmine or mondo once the canopy fills in.
Written for Rockwall's black clay, heat and winters by the Landscape Source team. Every yard is different — bring a photo by, or ask LS-Ai, and we'll tailor it to your spot.