Fertilize your roses with Greensand to prolong their bloom next year. Roses and other flowers thrive on Greensand because it supplies marine potash, silica, iron oxide, magnesia, lime, phosphoric acid and 22 trace minerals. It's also a boon for tomato lovers, because it has the vitamins and minerals that tomato plants need to produce abundant, intensely flavored fruit. Improves plant health Loosens heavy clay soil Earth-friendly and 100% organic Apply 2-4 lbs per 100 sq ft N-P-K: 0-1-6 Gardener's Supply Exclusive