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Hairy white top or ballcress (Lepidium appelianum)
https://pested.osu.edu/node/421
mustard plant in the brassicaceae family that grows up to two feet tall. Plants appear grey-green, soft, ... is a prolific spreader. Each plant produces 300-2000 seeds and shoots can develop from any part of ...
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Palmer amaranth (Amaranthys palmeri)
https://pested.osu.edu/node/408
tall plants (usually 6'-8' but can reach 10') with alternately arranged leaves and ... female flowers occur on separate plants. Fruit: Single seeded utricle with black to dark brown seed. ... A plant can produce up to one million seeds. Root: Taproot with an extensive fiberous root system. The ...
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Purple loosestrife (Lythrum salicaria)
https://pested.osu.edu/node/410
family. Loosestrife plants grow from 4'-10' in height, depending upon conditions, and produce ... showy flowers throughout much of the summer. Mature plants can have from 30 to 50 stems arising from ... outcompetes and replaces native grasses, sedges and other flowering plants that provide a higher quality ...
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Yellow groove bamboo (Phyllostachys aureasculata)
https://pested.osu.edu/node/426
planted as an ornamental, where it grows rapidly and can quickly take over an area. Life Cycle: ... landscape plant, it can be found spreading where it has been planted. Leaves: Grass-like, 3"-6" ...
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Marestail (Conyza canadensis)
https://pested.osu.edu/node/405
Marestail (Conyza canadensis) Description: An annual plant reaching 1'-6' in height. ... Mature plants have an erect central stem with leaves that are entirely without petioles and inconspicous ... orchards, fallow fields, waste areas and roadsides. Leaf: Mature plants have leaves that are entirely ...
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Russian thistle (Salsola Kali var. tenuifolia)
https://pested.osu.edu/node/411
grows 1'-3' in height, commonly known as tumbleweed. The rigid, erect plant is spiny and ... profusely branched. One plant can produce up to one million seeds. Often used when rehabilitating disturbed ... Taproot with extensive lateral roots. The problem is….plants break off and disperse seed over long ...
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Musk thistle (Carduus nutans)
https://pested.osu.edu/node/407
flowers and erect stems up to 5' in height, branching near the top of the plant. Both leaves and ... plant may product thousands of straw colored seeds. Root: Long, fleshy taproot that can penetrate up to ... 1.3' in depth. The problem is….the invasive nature of this plant can lead to severe degradation of ...
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Canada Thistle (Cirsum arvense)
https://pested.osu.edu/node/397
aggressively. Hand-pulling and cultivation are often ineffective control mechanisms because new plants sprout ... 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. ...
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Serrated tussock (Nassella trichotoma)
https://pested.osu.edu/node/423
leaf blade and the leaf sheath. Flower: When flowering, the plant can appear purple, turning a golden ... Diffuse, fibrous. The problem is…serrated tussock is a prolific seeder with 90% of the plant being ...
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Heart-podded hoary cress (Lepidium draba sub. Draba)
https://pested.osu.edu/node/422
Heart-podded hoary cress (Lepidium draba sub. Draba) Description: Plants grow up to around ... high-price wheat lands. One mature plant produces 1,200 to 4,800 seeds ...