Since frost seeding clover is become very popular to use as green manure and add Nitrogen to the soil at time of plow-down, is it really necessary to buy expensive seed from a company like Frigid Forage? From what I'm reading, Red Clover is the best fixer of Nitrogen. That said, is there any reason i shouldn't allocate my $$$ to a pure strain of this seed from a company like the one listed below? Red Clover Seeds - Trifolium Pratense Clover Significantly cheaper than buying an 8.5 lb bag from Frigid Forage for $45 that plants 1 acre when i can buy 50 lbs for $130?? Theory would be to frost seed all of my food plots/trails with the option of plowing it down in July and planting Brassicas year after year.