I use generic glyphosate concentrate from my local co-op and always add a generous dose of Hi-Yield spreader/sticker. It really helps for many shiny-leaved weeds (e.g., vinca, which is darn hard to kill even then). I have seen no evidence that the wetting agent interferes with the activity. This is my go-to strategy because I hate pulling weeds. Despite considering myself a master of the surgical strike, once in a while my aim is off and when my TB iris bloom, there will be an anemic-looking flower or two. Same basic colors as they should be, but small, pale, and non-ruffled. This is Roundup damage as expressed in iris. Doesn't kill the plant, but the impact on the current bloom is very characteristic! Bob Zone 7 where we got 2" of rain today but escaped the violent weather that went through B'ham and 'Nooga tonight _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net>