Frontier it is normally not a good idea to mix alfalfa and clover. The clover will overtake the alfalfa, and the alfalfa is highen in protein. You also fertilize differently for clover than alfalfa. You only use PotAsh for alfalfa but you use triple 19 for clover. It is necessary(not mandatory)to kill all the grass and clover before you plant the alfalfa. It is also best to plant the alfalfa into the ground(not to sprikle on top of the ground). The reason you use Potash instead of triple 19 is because alfalfa does not require Nitrogen to grow. It is a legume and fixates its own Nitrogen. Alfalfa is best, but takes considerably more upkeep. Tom.