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Noxious weed - Defined in the Colorado Noxious Weed Act, as an <br />alien plant that have been designated by rule as being noxious, and <br />meets one or more of the following criteria,- <br />(a) <br />riteria;(a) Aggressively invades or is detrimental to economic <br />crops or native plant communities; <br />(b) Is poisonous to livestock; <br />(c) Is a carrier of detrimental insects, diseases, or parasites - <br />(d) The direct or indirect effect of the presence of the plant <br />is detrimental to the environmentally sound <br />management of natural or agricultural ecosystems. <br />Ornamental - A plant grown by nurseries with traits desirable for <br />landscaping, such as flower color, drought tolerance, shading, etc. <br />Perennials Plants that live 3 or more years. <br />Raceme - An arrangement of flowers along a stem on individual <br />stalks about equal in length. <br />Restoration -- A management action that results in range or <br />pasture improvement without re -seeding. <br />Re -vegetation - A management action that results in range or <br />pasture improvement including seeding. <br />Rhizomes - An underground stem, usually lateral, sending out <br />shoots above ground and roots below. <br />Rosette - A somewhat round, flattened cluster of leaves typical of <br />the early growth stage of many biennial plant species. <br />Seedling - A newly germinated plant, not yet mature. <br />Sessile - A plant without a stalk. <br />Simple perennials - Perennial plants that reproduce by seed only. <br />Spikes - A usually long inflorescence with sessile flowers. <br />Succulent - Fleshy. <br />Suppression - Defined in the Colorado Noxious Weed Act as <br />reducing the vigor of noxious weed populations within an infested <br />region, decreasing the propensity of noxious weed species to <br />spread to surrounding lands, and mitigation the negative effects of <br />noxious weed populations on infested lands. Suppression efforts <br />may employ a wide variety of integrated management techniques. <br />Tiller - A shoot, often one that sprouts from the base of a grass. <br />Winter annuals - Plants which germinate in late summer or fall, <br />over -winter and complete life cycle by the following spring or <br />summer (ex. cheatgrass, tumble mustard). <br />