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Rangeland -Pasture <br />Dalmatian Toadflax <br />Recommendations <br />Identification and <br />Management <br />Dalmatian toadflax (Linaria genistifolia ssp. dalmatica) is a non-native deep-rooted <br />perennial that spreads by seeds and aggressive, creeping, horizontal roots (rhizomes). <br />Dalmatian toadflax can grow 3 to 4 feet in height. The leaves are heart shaped to <br />lanceolate with the base clasping around the stem. Both leaves and stems are waxy with <br />a whitish or bluish cast. Flowers grow at the bases of the tipper leaves. The flowers are <br />snapdragon -like in appearance. They are yellow, with an orange throat and a straight to <br />slightly curved spur. <br />Dalmatian toadflax emerges as early as mid-March and typically begins <br />flowering in late May. A mature Dalmatian toadflax plant may produce up to 500,000 <br />seeds per year. These tiny, brown -black, winged seeds may lay dormant in the soil for <br />up to 10 years and are easily distributed with the wind. The roots of Dalmatian toadflax <br />can go 4 to 10 feet into the soil column with lateral roots extending up to 10 feet from <br />the parent plant. The key to controlling Dalmatian toadflax is to eliminate seed <br />production while reducing the plant's nutrient reserves in its root system through <br />persistent, long-term management. <br />Dalmatian toadflax was introduced as an ornamental plant in the Iate 1800's. <br />Dalmatian toadflax thrives in drier climates, is a strong competitor in coarse soils, <br />disturbed soils and sparsely vegetated sites. Once established, even sites in excellent <br />condition will do little to stop its spread. <br />Combining control methods for Dalmatian toadflax is imperative. Early detection <br />is the most important. Maintain healthy pastures and rangeland while continually <br />monitoring your property for infestations. Address any new infestations as soon as <br />possible to limit their establishment and spread. This will save time and money. <br />On the backside of this sheet are Dalmatian toadflax management <br />recommendations. If you have any questions, please contact the Weld County Public <br />Works Dept., Weed Division at (970) 304-6496 ext. 3770. Please visit our website at <br />www.weldweeds.ore <br />