With the good grass comes the not so good weeds. In the picture below I am in a field of Texas broom weed. Cattle do not eat broom weed, in fact it is toxic to them. On the other hand, Monarch Butterflies love it! We probably will have millions of Monarch Butterflies in the Fall stop at the ranch on their way to Mexico. They can't get enough of the broom weed and its blossom. A couple of years ago..... we had tons of broom weed and millions of Monarchs stopped at the ranch on their 1000 mile trip from Canada to Mexico, I wonder how many will butterflies will stop this fall.