plants r 3 yrs old. planted as hedge row 5' apart not every plant yellow, some healthy we just had alot of rain for days they look burnt however, leaves turning yellow then crunchy brown happening within days. last week they were healthy looking. Im very confused. thinking bugs? (haven't seen any) thought poison (the weeds arond them are just fine however) Im at a loss.. hurry if u can I don't want to lose all my bushes. I've got 6 -7 that look bad. I have 15 in that row....Some disease?? HELP PLEASE!