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  1. Japanese knotweed (Polygonum cuspidatum)

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

    tolerate a wide array of soil and moisture conditions. Leaves: Alternating and broad. They typically grow ... birds and insects. Not all seeds are fertile. Root: Rhizomes The problem is…an aggressive grower. ...

  2. New Volunteer Orientation Steps

    https://chadwickarboretum.osu.edu/join-us/orientation-new-volunteers

    a Volunteer Today  application Schedule a in-person Meet and Greet with our Volunteer Coordinator, preferrably ... event like our Spring Plant Sale, you can be a "Short Term Helper" and only complete step 6.  ...

  3. Canada Thistle (Cirsum arvense)

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

    meadows. It can also be found in clay to gravely soils. Leaves: 3-8 inches long, alternate with spiny, ... prevents the coexistence of other plant species through shading, competition for soil resources, and ...

  4. Hairy white top or ballcress (Lepidium appelianum)

    https://pested.osu.edu/node/421

    alkaline soils Leaves: Blue-green in color with lower leaves being stalked and upper leaves having two ...

  5. Perennial sowthistle (Sanchus arvensis)

    https://pested.osu.edu/node/418

    neutral, fine textured, rich soils. Leaves: Alternate, blue-green with prickly-toothed margins. Deeply ...

  6. Water Hemp (Amaranthus tuberculatus)

    https://pested.osu.edu/node/425

    stems. Life Cycle: Annual Habitat: Crop fields, disturbed areas. Prefers poorly drained soils. Leaves: ...

  7. Apple of Peru (Nicandra phyhsalodes)

    https://pested.osu.edu/node/396

    producer. Large, persistent seed-banks quickly accumulate in the soil due to seed dormancy. Very competitive ...

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

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

    provides an overview of pesticide safety information. Unlike our in-person program, virtual training does ... New Applicator classes. If you need recertification credits, please attend one of our online  ... permitted to make 6c applications. 8- Turf-  The application of pesticides to lawns, turf, sod, or to soil ...

  9. Current Volunteers

    https://chadwickarboretum.osu.edu/join-us/current-volunteers

    to lead a tour, or discover tours to shadow our always-updating signup here:  ...

  10. Johnsongrass (Sorgum halepense)

    https://pested.osu.edu/node/402

    soil surface. They are stout with purple spots and scales at the nodes.  The problem is….Johnsongrass ...

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