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Burr thistle <br />page 2 of 2 <br />CONTROL <br />BIOLOGICAL None <br />_- -� <br />CHEMICAL <br />2,4-D or 2,4-D + dicamba (Rangestar, others) Spring or Fall <br />Rosette <br />Clopyralid (Transline or Stinger) <br />Clopyralid + 2,4-D (Curtail) <br />Dicamba (Banvel, others) <br />Bolting to early bud <br />Picloram Jordon 22K "restricted use chemical) <br />Chlorsulfuron (Telar) Spring <br />Metsulfuron (Escort XP) <br />CULTURAL <br />Prevention <br />Removal - make sure the <br />entire root is removed. Must be repeated as new plants germinate. <br />MECHANICAL <br />- <br />Burning <br />N/A <br />Grazing <br />N/A <br />Mowing <br />Prior to seed set <br />Mow every three to four weeks. <br />June through <br />Works best when combined with fall herbicide September <br />treatments. <br />Use all chemicals according to the manufacturer's label. <br />No specific recommendation or endorsement is made or implied by listing the above methods or products. <br />10/2017 <br />700 Jefferson County Parkway, Ste 100, Golden, CO 80401 <br />303-271-5489 <br />jeffco.is/wee"nd-pest <br />