Why Your Mesquite Keeps Coming Back, and How to Make It Stop
Cutting mesquite without killing its underground buds just makes more mesquite. Here's what Extension research says actually works in southwest Oklahoma.
Mesquite belongs here, which is the problem
The Oklahoma State University Extension: Mesquite plant profile lists honey mesquite as native to the western half of Oklahoma. In the state's southwest corner, OSU's OSU Extension E-993: Oklahoma's Native Vegetation Types describes a mesquite grassland: buffalograss, blue grama and sideoats grama with scattered mesquite, mostly on clay soils. Scattered is fine. A thicket that takes over a pasture, fence line or back acre isn't.
The one thing to understand: the bud zone
Texas A&M AgriLife Extension: Mesquite Ecology and Management puts it plainly. Mesquite carries buds on its stems and trunk, and also in a central zone underground, 12 to 18 inches deep. "Unless these buds are killed, the mesquite will continue to resprout."
Every control method that works does one of two things: it removes that zone from the soil, or it gets herbicide into it evenly. Every method that fails leaves it alive.
Why most DIY attempts backfire
- Chainsaw only. The top comes off and the bud zone sends up several new stems. AgriLife notes that multi-stemmed mesquite usually means the top was cut or damaged earlier.
- Spraying one side. If foliage is only partly covered, as along one side of a fence line, herbicide doesn't reach the whole bud zone and some plants survive.
- Burning. Adult trees resprout because the bud zone is protected underground.
- Treating multi-stem regrowth like a single trunk. Stem sprays work less well on multi-stemmed plants because herbicide doesn't move sideways to buds under untreated stems.
What works, by situation
| What you've got | Approach that targets the bud zone |
|---|---|
| A few scattered trees, one or a few trunks each | Cut-stump treatment: cut low and treat the fresh stump right away with a labeled herbicide. Or grub the plant out |
| Smooth-barked young plants, few stems | Basal stem treatment around each stem near the ground, any time of year |
| Bushy plants with lots of leaves | Foliar spray timed 45 to 90 days after bud break, with full coverage |
| Dense stands on acreage | Broadcast methods: mechanical (chaining, root plowing) or broadcast spraying. Talk to Extension and NRCS about options |
| A large single tree near the house | Tree removal plus stump work, with follow-up for sprouts |
Our mesquite clearing service covers scattered trees and small acreage. For bigger jobs, see land clearing.
A note on seeds
Seedlings will show up for a while after clearing. AgriLife Research found most seeds left on the soil surface lose the ability to germinate within a year, so a few seasons of spot treatment usually handles it. Mesquite is a legume, so pods are the source. Keep new seedlings small and they're easy.
What you can do yourself
Pull or spot-treat seedlings, mow pasture regrowth while it's young, and keep track of where each tree was. Leave big trees, anything near structures or lines, and herbicide work on more than a few plants to someone with the equipment, and always read the label.
Cost factors
Free estimates. Price depends on how many trees and stems you have, trunk size, density, access for equipment, whether you want grubbing or cut-stump work, debris handling (chipping or haul-off), and follow-up visits for sprouts. A cheap cut that doesn't touch the bud zone costs more in the long run.
Walking your place
We count trees and stems, note how many are multi-stemmed regrowth, check access, and recommend a method for each area along with a follow-up plan. We're licensed and insured, and we'll tell you when scattered native mesquite is fine to leave.
Mesquite questions around Lawton
I cut it to the ground last year. Why is it back with five trunks?
Because the buds that matter are underground. Texas A&M AgriLife says mesquite has a bud zone 12 to 18 inches below the surface. Cut the top without killing that zone and the plant resprouts. A multi-stemmed mesquite is usually a sign it was cut or damaged before.
Will a brush fire take care of it?
Usually not for grown trees. AgriLife notes adult mesquite resists fire because the bud zone is protected underground. Seedlings are more vulnerable.
Are the seeds going to haunt me for decades?
Less than people think. Seeds stored in a herbarium have germinated after 50 years, but in the field, AgriLife Research at Uvalde and Vernon found that 95 to 99 percent of seeds left on the soil surface for a year could no longer germinate. Expect new seedlings for a few seasons, not forever.
How far do the roots go?
AgriLife cites research showing mature mesquite roots can reach 45 feet deep and 45 feet out from the trunk. That's one reason it holds up in drought.
When should I spray the leaves?
AgriLife's timing for foliar treatment is when the plant is moving sugars down to its roots, usually 45 to 90 days after bud break. Cut-stump and basal treatments can be done any time of year. Always follow the herbicide label.
Who can help me identify what's growing on my place?
The OSU Extension office in Comanche County takes plant and soil questions. We're glad to walk your land too.
Sources
- Texas A&M AgriLife Extension: Mesquite Ecology and Management: bud zone, resprouting, fire, seed survival, roots, treatment timing and methods.
- Oklahoma State University Extension: Mesquite plant profile: native range in Oklahoma.
- OSU Extension E-993: Oklahoma's Native Vegetation Types: mesquite grassland in southwest Oklahoma.
- OSU Extension, Comanche County: local plant ID and soil help.