Landscape Management, Weed Watch 2014
WEEDWATCH STANDING SENTINEL TO PROTECT PLANT HEALTH ANNUAL SOWTHISTLE Sonchus oleraceus For more information regarding these and other turf weeds and related control technologies and tips please visit www DowProvesIt com or call 800 255 3726 BROUGHT TO YOU BY PHOTOS COURTESY FREEBIGPICTURES COM FAR LEFT FOREST KIM STARR STARR ENVIRONMENTAL BUGWOOD ORG Recommended Dow AgroSciences solution Snapshot specialty herbicide Recommended Dow AgroSciences solution Gallery specialty herbicide CONTROL TIPS For optimum control apply a pre emergent herbicide such as isoxaben that is labeled for control of annual sowthistle Pre emergence herbicides must be applied before weeds germinate Any existing annual sowthistle must be physically or chemically removed prior to pre emergent herbicide application Tilling of a landscape bed prior to planting and herbicide application will improve control of annual sowthistle IDENTIFICATION TIPS This winter annuals leaves form in a basal rosette It produces an upright step with alternating deeply lobed leaves which feature a row of spines along the mid vein of the lower surface Its deep tap root will secrete a milky sap Small yellow lowers appear in late spring to early summer CONTROL TIPS Prickly lettuce is a weed commonly found in container plantings and nurseries For optimum weed control and plant safety on a broad range of ornamentals apply a pre emergent herbicide that contains isoxaben Till the area prior to planting or pull any existing seedlings prior to pre emergent herbicide application IDENTIFICATION TIPS This annuals bluish green leaves form a rosette deeply lobed with prickly spines on the margin Yellow lowers similar to dandelion appear in mid to late summer but they form on a branched stalk vs a hollow solitary stem Has a tap root and all plant parts exude a milky sap when broken Its often confused with prickly lettuce but does not have spines along the mid vein PRICKLY LETTUCE Lactuca serriola State restrictions on the sale and use of Snapshot apply 27 JANUARY 2012 LANDSCAPEMANAGEMENT NET
You must have JavaScript enabled to view digital editions.
