Planters II Foundation Mineral Fertilizer is made from a naturally occurring mineral found in the Colorado Rocky Mountains near Salida, Colorado. As with all registered fertilizers, the minerals found in Planters II Fertilizer are directly plant available.
What does this mean to you? It means instead of waiting 2-200 years (about average time for most amendments on today's market), the minerals in Planters II Fertilizer have been proven to be taken up directly by the plant: usually showing results in 30-60 days. This encourages immediate results all while building a fertile foundation in your soil. To think, one product, feeding both your plants and your soil!
The Planters II Mineral
The mineral is a highly metamorphosed fresh water evaporate of the
Mississippian-Pennsylvanian geologic transition period. It is approximately
30% water soluble in the first hour, the balance becoming available during
the normal crop season - a natural time released fertilizer.
There is no geological name for the mineral. The minerals are plant available, non-toxic(LD50>4gms/kg), they do not leach from the soil, and are size compatible with current fertilizer spreaders (-8+12 mesh), weighing approximately 84lbs/cu ft in granular form. Planters II Fertilizer is easy to apply with a standard spreader or air seeder, and the fertilizer can be applied while seeding. We recommend following our application rate guidelines when applying.
You will be able to see results during the regular growing season in the form of increased plant vigor, a larger root system, increased drought resistance, increased chlorophyll, higher protein in grains and hay, larger grain heads, better flavor in fruit and vegetables, higher yields and better soil tilth.
Minimum Guaranteed Analysis of Plant Available Minerals

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Calcium (Ca) promotes early root formation and influences intake of other plant foods. Compared to gypsum or limestone Planters calcium is many times more reactive. It is a major nutrient and one of the hardest for plants to take up. 5.0% |
Molybdenum (Mo) is indispensable to the assimilation of gaseous nitrogen and important to the process of fixation of organic nitrogens. Very tiny amounts are required for the growth of Rhizobium 0.0005% |
Cobalt (Co) lowers the possiblity of Bang's and Bush diseases among cattle. It is also believed to be essential in nitrogen fixation 0.0005% |
Magnesium (Mg) is essential to formation of chlorophyll, making greener plants. 0.50% |
Boron (B) enables plants to absorb and utilize calcium. In high levels Boron is toxic. 0.02% |
Sulfur (S) is utilized in development of proteins, vitamins, etc. It is also an aid to lowering the pH of high alkali soils. Often a sulfur deficiency is mistaken for a nitrogen deficiency as they look alike. 5.00% |
Iron (Fe) acts as a catalyst in the production of chlorophyll. 0.40% |
For more information:
Material Specifications (pdf) (108 KB) - contains MSDS information.
MSDS (pdf) (336 KB) - for label requirements
People spend enormous amounts of money each year on their health,
making sure to supplement their diet with nutrients. All living things
need proper nutrition. Skimping on the health of your crops makes as much sense
as building a house on sand. Everything needs a good Foundation and
by starting Planters II
The chances of the Planters basin being what it is, and what it can
do, are very remote. A rock that dissolves in water lasting
250 million years -- incredible! Planters Minerals are indeed unique
minerals and a great deal more. Curious to learn more? Read about the