Pacific Pearl Crushed Oyster Shell
Crushed oyster shells have many garden uses. The slow release of calcium and trace minerals is an obvious benefit, but this gritty substance also helps deter moles and voles.
That coarse texture also helps prevent water-logged soil in containers by providing aeration: mix a couple handfuls of shell into the potting soil for small pots and proportionately more for large containers. As a 100% organic source of calcium, oyster shells also help neutralize soil acidity.
Agricultural Lime (Calcium Carbonate ) is a soil conditioner made from crushed limestone. It is an excellent calcium source. The benefits of agricultural lime include: Improving the physical, chemical and biological properties of the soil Promoting better nitrogen fixation by legumes Increasing the availability of nutrients to plants Reducing toxicities in the soil...
Azomite (OMRI Listed) AZOMITE® is a highly mineralized complex silica ore (Hydrated Sodium Calcium Aluminosilicate or HSCAS), mined in Utah from an ancient deposit left by an volcanic eruption that filled a small nearby seabed an estimated 30 million years ago. AZOMITE® is used as a naturally rich soil re-mineralizer...
If you want your vegetables to not only taste better but be healthier then adding rock dusts or trace minerals is important. Plants need more than just NPK and much of that is provided by rock dusts like basalt. What makes basalt special is that it contains many of these...