Pecan Tree Care in North Texas

What makes pecans different

Pecans are native to Texas river bottoms, where they grow tall with deep, rich soil and steady water. In a North Texas yard, they’re often working with heavy clay, hot summers and lawn competition. They can still do well, but they show stress in their own ways.

They’re also big trees. A mature pecan can tower over a two-story house and spread across a good part of a backyard. That size is a big reason people love them, and a big reason they need regular attention. Long, heavy limbs over the roof, deck or driveway deserve a closer look than they’d get on a smaller tree.

One thing that surprises new owners: pecans are among the later trees to leaf out in spring. If your pecan still looks bare while everything else on the street is green, give it some time before worrying. Scratch a twig and look for green tissue under the bark if you want reassurance.

Pruning and dead wood

Dead branches are common on pecans, especially in the upper and inner canopy, and the wood can drop without much warning once it dries out. Removing dead wood is one of the most useful things you can do for a mature pecan, both for the tree and for whoever parks or plays under it.

Since pecans aren’t affected by oak wilt, you have more flexibility on timing than you do with oaks. Late winter, when the tree is dormant and bare, is a good time for structural work because you can see every branch. Dead or broken limbs can come out any time.

• Remove dead, broken and hanging limbs.
• Shorten long, heavy limbs over the house or driveway by cutting back to healthy side branches.
• Thin crossing or rubbing branches lightly rather than stripping the interior.
• On young pecans, help one strong central leader develop and space out the main limbs.
• Avoid topping. It leads to weak regrowth that’s especially risky on a tree this size.

Water and soil

Pecans like steady moisture. Long dry stretches in summer stress the tree and can affect the nut crop. Texas A&M AgriLife guidance points to late summer as an important time, since that’s when nuts are filling. A slow, deep soak across the root zone every week or two during dry weather does more good than frequent light watering.

The roots spread wide, often well beyond the canopy, and most are in the top layer of soil. Keep heavy equipment, trenching and new paving away from them as much as possible. A ring of mulch, pulled back from the trunk, helps keep the soil cooler and holds moisture.

In alkaline North Texas soils, pecans can sometimes show signs of zinc deficiency, like small, crinkled leaves bunched at the tips of shoots. If you see that, a soil test is a sensible first step before adding anything.

Common pests and problems

Most pecan pests in home yards are more of a nuisance than a threat to the tree. Here are the ones North Texas homeowners notice most:

• Fall webworms. Silky tents of webbing at the ends of branches in summer and fall. They look bad but rarely harm an established tree. Small nests on reachable branches can be pruned out.
• Twig girdlers. A beetle that chews a neat ring around small twigs in late summer and fall, causing them to drop. Picking up and disposing of fallen twigs helps reduce them the next year.
• Pecan weevils and nut casebearers. These affect the nut crop more than the tree itself. They matter mainly if you care about harvesting.
• Hollow or soft spots in the trunk or large limbs, which can mean decay and deserve a closer look.

When a pecan needs a closer look

Pecans can live a long time, and many of the big ones in North Texas yards are decades old. With age come a few warning signs worth calling someone about: large dead limbs over the house, cracks where major limbs join the trunk, mushrooms or conks at the base, a canopy that’s thinning year after year, or a split between two big stems.

Pecans also react badly to changes in their root zone. A new patio, a pool, a sprinkler trench or extra soil spread over the roots can show up as decline a year or two later. If you’re planning work near an old pecan, it’s worth getting advice first.

Sometimes the answer is pruning to reduce weight on a heavy limb. Sometimes cabling can help support a weak union. And sometimes an old pecan has more decay than it’s worth keeping. An arborist can help you sort out which one you’re looking at.