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Livestock avoid grazing the invasive annual grass medusahead (Taeniantherum caput-medusae�(L.) Nevski). We hypothesized that application of the herbicide glyphosate to medusahead stands would increase use of the weed by livestock. Six medusahead-infested plots (0.054 ha each) were divided into three 6 m by 30 m strips and randomly assigned to the following treatments: 1) application of glyphosate (RT 3; Roundup brand) at a rate of 394g ae ha-1, 2) potassium chloride (KCl; salt in RT 3) at a rate of 174g ai ha-1, and 3) Control (CTRL, no chemical application). Seven days after treatment, beef steers (n=12) were randomly paired and assigned to each of the 6 plots in a complete randomized design with repeated measures. Animals were allowed to graze from 0800 to 1700 from June 11 to June 18, 2016.� Foraging events on medusahead (MH), other grasses (GR) and forbs (F) were measured using the bite count technique at successive five minute intervals per steer for 4 h/d. Cattle preferred on average GR (11.5 � 0.4 bites/min) over F and MH (2.7 � 0.2 and 2.7 � 0.6 bites/min, respectively). However, bite counts in RT 3 steadily increased for GR, MH, and F from June 14 (3.3 � 0.3; 0.3 � 0.3; 0.7 � 0.1 bites/min) to June 18 (4.5 � 0.3; 2.5 � 0.3; 1.1 � 0.1 bites/min, respectively), while bite counts for GR, MH, and F in KCl and CTRL increased to a lower extent during the same period. Moreover, the proportion of medusahead removed from RT 3 strips increased steadily from June 12 to June 18 (from 0.02 to 0.5 � 0.09), a much greater increment than for KCl (from -0.08 to 0.01 � 0.02) or CTRL strips (from -0.06 to 0.06 � 0.03). The greater utilization of glyphosate-treated medusahead plants and strips suggests that an integrated approach of herbicide and grazing treatments is an efficient tool to control medusahead spread in rangelands.