Even compatible with milkweed restoration IF the spraying is done in late winter
or early spring before the milkweed has emerged from the ground.
Two real life examples:
1) Seeds I planted in the spring of 2011, along a roadside that had been sprayed about a month earlier, managed to produce seedlings that survived the dry summer and fall months and are now sending up healthy looking shoots again this season despite a second spraying in March this year:
http://www.youtube.com/watch?v=o7lr5Mvk_yU
2) A plug of tiny seedlings I transplanted on another section of roadside in the spring of 2011 that had been sprayed about a month earlier, also managed to survive the dry summer and fall months and are now sending up healthy looking shoots despite a second spraying in March this year:
http://www.youtube.com/watch?v=Mr7S0eLt3rE
You are like the boy who called wolf too many times. 



