Posted 6/3/2007 21:20 (#157997 - in reply to #157744) Subject: RE: Will frost kill new alfalfa?
Wyoming
Seedling alfalfa can handle some pretty remarkable cold temps before it reaches the first trifoliate stage. I've personally seen new alfalfa (prior to trifoliate) handle 24F for four hours. Came through just fine.
I can't speak as to the herbicide carry-over question.