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  1. Purple loosestrife (Lythrum salicaria)

    https://pested.osu.edu/node/410

    Description: A herb in the loosestrife family. Loosestrife plants grow from four to ten feet high ... from 30 to 50 stems arising from a single rootstock. Life cycle: Perennial Habitat: Invades many ... nutrition for wildlife. The highly invasive nature allows it to form dense, homogeneous stands that restrict ...

  2. Poison hemlock (Conium maculatum)

    https://pested.osu.edu/node/409

    Habitat: Grows in dry to most soils and is often found near roadsides. Field borders, hiking trails, ... however, the seeds contain the highest concentration of poison. It contains highly poisonous alkaloids ...

  3. Canada Thistle (Cirsum arvense)

    https://pested.osu.edu/node/397

    levels such as stream bank sedge meadows. It can also be found in clay to gravely soils. Flower: Lavender ... thistle is a highly invasive thistle that prevents the coexistence of other plant species through shading, ... competition for soil resources, and possibly through the release of chemical toxins poisonous to other plants. ...

  4. February 7, 2024- New Applicator Training- Webinar

    https://pested.osu.edu/events/february-7-2024-new-applicator-training-webinar

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

  5. October 2, 2024- New Applicator Training- Webinar

    https://pested.osu.edu/events/october-2-2024-new-applicator-training-webinar

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

  6. April 10, 2024- New Applicator Training- Webinar

    https://pested.osu.edu/events/april-10-2024-new-applicator-training-webinar

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

  7. August 21, 2024- New Applicator Training- In Person

    https://pested.osu.edu/events/august-21-2024-new-applicator-training-person

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

  8. March 20, 2024- New Applicator Training- In Person

    https://pested.osu.edu/events/march-20-2024-new-applicator-training-person

    Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and Turf ... (Category 8). Testing is available at the conclusion of the day.  A photo ID is required for the test ... application of pesticides to lawns, turf, sod, or to soil areas being prepared for the production of turf for ...

  9. Japanese knotweed (Polygonum cuspidatum)

    https://pested.osu.edu/node/401

    high. Life cycle: Perennial Habitat: Grows best in full sun and can grow semi-shade. It is found along ... of soil and moisture conditions. Flower: Many white flowers arranged in spikes. Bloom in August and ...

  10. May 15, 2024- New Applicator Training- In Person

    https://pested.osu.edu/events/may-15-2024-new-applicator-training-person

    Ornamental Weed Control (Category 6c). Attendees will choose between Industrial Vegetation (Category 5) and ... Turf (Category 8). No testing is available at the conclusion of this course. Contact the ODA to ... 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil areas being prepared for the ...

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