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JST B <br /> Scentless chamomile - Matricaria perforata <br /> An annual, biennial, or short-lived perennial forb that is native to Europe. <br /> Produces a dense mat that out-competes other plants. A single plant can <br /> produce 300,000 seeds. Seeds and flowers are continuously formed, <br /> producing many generations during the growing season. <br /> Identification: <br /> • Flowers: Yellow-centered disk surrounded by white petals, daisy-like. <br /> • Leaves: Alternate, finely divided, fern-like. <br /> 41 Stems: 6 inches to 3 feet tall with numerous branches. <br /> ,ontrol methods: <br /> Biological: <br /> There is no biological control available at this time. <br /> Mechanical: <br /> Frequent shallow tilling can help exhaust seed bank. <br /> Chemical: <br /> Metsulfuron: Apply when plant is in rosette to bolting stage. <br /> Chlorsulfuron: Apply when plant is in rosette to bolting stage. <br /> Aminopyralid: Apply when plant is in rosette growth stage. <br /> 46 <br />