G.Leave
Cultivators Club
I did the math and i figure a 21 pound bag could last me 3 years of outdoor(12 huge plants), and 3 years of indoor(1.5 gallon pots at 7 per grow, two runs per winter) !! That is assuming that the shelf life holds that long of course....shit its cheap enough i will use it on young veggie seedlings before they are planted in the garden.