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Which agency licenses Weed-category pest control in Texas's structural program?
- The Texas Department of Agriculture, Structural Pest Control Service
- The Texas Commission on Environmental Quality
- The county Cooperative Extension office
- The U.S. Environmental Protection Agency
- The Texas Parks and Wildlife Department
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Weed-category pest control in Texas's structural program is licensed by the Structural Pest Control Service of the Texas Department of Agriculture (TDA), under the Texas Occupations Code Chapter 1951 and Title 4, Chapter 7 of the Texas Administrative Code. The TDA administers the General Standards exam and the category exams, including Weed, and issues the licenses. The environmental commission, EPA, and Parks and Wildlife have other roles. Identifying TDA as the structural regulator is the foundation for Texas certification.🔗 Source
The Texas Weed category authorizes the control of:
- Termites inside wood structural members
- Weeds and other unwanted vegetation in turf, ornamental plantings, and similar non-agricultural sites
- Stored grain insects in commodity bins
- Pests by fumigant gases only
- Mosquito larvae in standing water only
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Texas's Weed category authorizes the control of weeds and other unwanted vegetation in turf, ornamental plantings, and similar non-agricultural sites served by structural pest control. It is distinct from termite/wood-destroying work, commodity fumigation, and other categories. An applicator must hold the Weed category to perform vegetation control for hire under the structural program. Matching the work to the correct category keeps a technician within the scope of the license.🔗 Source
What passing score does Texas require on its structural pest control examinations?
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Texas requires a score of 70% to pass each structural pest control examination, including the General Standards exam and category exams such as Weed. An applicant scoring below 70% must retake that exam. The threshold is not 75%, 65%, 80%, or 60%. Meeting the 70% standard on both the General Standards and category exams is required before licensing.🔗 Source
To be licensed in the Weed category, a Texas applicator must pass:
- The Weed exam only, with no General Standards
- The General Standards exam only, with no category exam
- No exam if experience is documented
- The General Standards exam plus the Weed category exam
- A federal EPA exam only
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Texas requires an applicator to pass the General Standards (CORE) examination plus at least one category examination - here, Weed - to be licensed in that category. The General Standards exam covers laws and safety; the category exam covers the specific service area. Passing only one exam, relying on experience, or a federal card alone does not satisfy the requirement. The General-Standards-plus-category structure ensures both general and specialized competence.🔗 Source
In Texas, a business performing weed and vegetation control under the structural program for hire must:
- Do nothing beyond hiring workers
- Register only its vehicles
- Obtain only a federal EPA number
- Get only a county permit
- Hold a business license for each location and employ a responsible certified applicator
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Texas requires any business performing structural pest control for hire - including weed and vegetation control - to hold a business license for each business location and to designate a responsible certified commercial applicator. Simply hiring workers, registering vehicles, a federal number, or a county permit does not meet the requirement. The business license tied to a certified applicator is the core of operating legally, linking company authority to a qualified individual.🔗 Source
According to Texas A&M AgriLife, how do preemergence herbicides work?
- They form a barrier that interferes with weed-seed germination and seedling emergence, killing seedlings before they establish
- They are sprayed on large, mature weeds to kill them on contact
- They only work on weeds that have already flowered
- They fertilize weeds to outcompete the lawn
- They have no effect on weed seeds
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Texas A&M AgriLife explains that preemergence herbicides are designed to control weeds by interfering with seedling germination and emergence, essentially forming a protective barrier during the seasons when weeds germinate and killing seedlings before they establish. They are not aimed at large mature weeds or only flowered weeds, do not fertilize weeds, and certainly do affect weed seeds. Understanding the preemergence mechanism is the basis for using these products correctly.🔗 Source
According to Texas A&M AgriLife, the key to success with a preemergence herbicide is:
- Applying it after weeds are knee-high
- Timing - applying it before the weed seeds germinate, and activating it with irrigation or rainfall
- Applying it only during a hard freeze
- Skipping any watering after application
- Applying it once every five years
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Texas A&M AgriLife stresses that timing is the key to preemergence herbicide success: the product must be applied before weed seeds begin to germinate (typically early spring or fall, depending on the species), and proper irrigation or rainfall is usually needed afterward to activate the herbicide and move it into the soil where seeds are located. Applying after weeds are large, only during a freeze, skipping water, or treating once every five years would not work. Correct timing and activation make preemergence control effective.🔗 Source
According to Texas A&M AgriLife, postemergence herbicides are most effective when:
- Weeds are large and drought-stressed
- Weeds have not yet germinated
- Weeds are small and actively growing
- The soil is frozen solid
- Applied only to bare soil with no weeds present
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Texas A&M AgriLife explains that postemergence herbicides are applied after weeds have emerged and are actively growing, and are most effective when the weeds are small and actively growing; large or stressed weeds (from drought or temperature) are harder to control. They are not for pre-germination soil or frozen conditions, and they target existing weeds rather than bare soil. Treating small, actively growing weeds gives the best postemergence results.🔗 Source
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