Hackberry Trees in North Texas: The Tough Native You Already Have

Drive through any established North Texas neighborhood and count the trees. A lot of them are the same tree, and most homeowners have never learned its name. The hackberry is the default urban tree of Dallas-Fort Worth: tough, fast, everywhere, and mostly ignored until something goes wrong. This is the article that tells you which one you have, what the weird stuff on the leaves means, and when a hackberry is actually a problem worth spending money on.

Which hackberry is in your yard

There are two, and in DFW it barely matters for care, but it is worth knowing. The sugarberry (Celtis laevigata) is the Texas native: the Texas A&M Forest Service lists it as very common across the eastern two-thirds of the state, growing to 90 feet, at home in many well-drained soils. The common hackberry (Celtis occidentalis) is native only to the northern High Plains, but it has been planted so widely as a landscape tree across north and northeast Texas that it grows fine on almost anything.

The honest difference for a homeowner: common hackberry wood is, in the Forest Service's words, rather soft, weak, and quick to decay when exposed. That matters when branches break. Both species share the warty, ridged bark that is the easiest field mark, and both make small dark fruit that birds love. Hackberries are also a larval host for hackberry butterflies, which is why a wildlife-friendly yard usually has one.

How to tell it is a hackberry

Three things. The bark develops distinctive warty bumps and ridges as the tree matures; nothing else common in DFW looks quite like it. The leaves are simple, oval, with a serrated edge and an uneven base where one side sits lower than the other. And the canopy is broad and spreading, a vase shape that gets big fast. If the tree in question was already there when the house was built, or volunteered itself along the fence line, and it matches that description, it is a hackberry.

People confuse them with elms constantly. The bark is the giveaway. Elms have furrowed, flaky bark. Hackberries have the warts. Our cedar elm guide covers the other half of that mix-up.

The bumpy leaves, explained

The most common hackberry question we hear: the leaves are covered in little nipple-shaped bumps. That is the hackberry nipple-gall maker, a tiny psyllid. Texas A&M AgriLife entomologists describe the cycle plainly: adults lay eggs on the leaves in spring, the leaf tissue swells around each larva and forms the gall, and the adults emerge in fall and go looking for shelter, which sometimes means your windows and doors.

Here is the part that matters: it is cosmetic. The galls do not meaningfully hurt the tree, the insects do not bite, and they will not permanently infest your home. No treatment is needed. Some years the galls are everywhere and the leaves look rough. The tree does not care. If the insects coming indoors bother you, seal the gaps around windows and doors in fall. That is the whole control program.

The caterpillar year

Every few years, DFW gets a fall when the hackberry leafrollers show up in force. These are small green caterpillars, the larvae of Sciota celtidella, and in a bad outbreak they can strip hundreds of hackberries bare. It looks catastrophic. AgriLife's entomologists call it more nuisance than panic: healthy hackberries leaf back out in the spring.

What helps the tree recover: water if it is dry, and keep lawnmowers and weed trimmers away from the exposed roots. Hackberry roots run shallow, and bark damage at the base is a bigger threat to recovery than the caterpillars ever were. If your tree was already thin or declining before the outbreak, that is the tree to worry about, and our dead vs. dormant checks will tell you where it stands.

The sticky stuff under the tree

If everything under your hackberry is coated in a sticky film that turns black, that is the woolly hackberry aphid: tiny, white, waxy insects about two millimeters long. They feed on the leaves and excrete honeydew, and the honeydew grows sooty mold. Extension sources describe them as a nuisance rather than a serious tree threat; a soil drench of imidacloprid is the documented effective treatment if the mess is bad enough to act on.

Most homeowners do not need to treat. The aphids do not kill the tree. The sooty mold is ugly but washes off hard surfaces with a hose, and it fades once the aphid population drops. Treat only if the honeydew is ruining a patio, a car, or an outdoor living space you actually use.

Ice storms are the real enemy

Hackberries shrug off drought, heat, and bad soil. What they do not shrug off is ice. A Tree Care Industry Association staff arborist puts hackberry on the high-susceptibility list for ice damage, and the reasons are structural: broad, spreading crowns with dense fine branching give ice a huge surface area to grab, and hackberries are prone to included-bark junctions, the weak V-shaped unions where bark gets trapped inside the fork.

That is why the February ice events keep breaking hackberries across the metroplex. The fix is preventive and boring: prune in the dormant season. The Texas A&M Forest Service guidance is clear. Winter is the best time for structural pruning. Dead, damaged, weak, or diseased limbs can come off any time of year with little effect. Wound closure is fastest when pruning happens before the spring flush, and heavy pruning of live tissue right after that flush should be avoided. A hackberry with its weak junctions thinned out before winter is a different tree than one that never got touched. Our trimming page covers what proper structural work looks like.

Should you plant one

Texas A&M horticulturist Calvin Finch gives the most honest assessment in print: hackberry ranks high on the list of desirable wildlife food producers and low on the list of desirable landscape species. In deep soils, he says, hackberries can grow into a desirable shade tree. Too often they get unattractive conformation, stem breakage, and a short life.

That is a fair summary. If you already have a sound hackberry in deep soil, keep it. It feeds birds and butterflies, shades the house, and asks for almost nothing. If you are planting new, species like cedar elm, chinquapin oak, and live oak take the clay and the heat with fewer structural headaches; our planting guide covers the fall timing and the first-summer watering that decides whether a new tree makes it.

When a hackberry is actually a problem

Remove a hackberry when the structure says so, not when the leaves look funny. Included-bark junctions splitting under load, a trunk with significant decay, a lean that is getting worse, or major limbs over the house after an ice event: those are removal calls. The galls, the caterpillars, and the aphids are not. A hackberry that is simply ugly in October is a hackberry doing fine.

If the tree is more than half dead, or the trunk is compromised, do not wait for the next storm to finish the job. Our removal page explains how we take big trees down in tight yards without wrecking the property.

What to do this week

Walk your property and find your hackberries. Check the bark for the warts, look at the branch unions for included bark, and look up into the crown for deadwood and crossing limbs. If you see structural problems, get them assessed before winter. Dormant-season pruning is the single best thing you can do for a hackberry, and the window opens in a couple of months.

Common Questions