Seems to be very common in NorCal. I've been spraying Monterey with spinosad occasionally, don't want to spray too late into flowering. I also have been picking them off my plant that is closest to harvest. They seem to attack the most mature plants first. I can not see myself trying to pick them off all my plants. It would take hours and hours everyday and you still wouldn't get them all. I just bought some Safer Brand Catapiller Killer containing B.T., ill rotate between the spinosad and BT. I don't think you can beat them , only keep them to a minimum. This is my first outdoor grow and they caught me off guard. I hate them worst than any other insect I've run across yet. If things get out of control I'm going to have no choice but to chop early. So far the spraying and picking has kept them at bay, somewhat. If this keeps up with the rest of my plants I don't know what I'll do. Need to find a "Professional Budworm Picker". Good luck, if you find anything that helps, please let us know.