Agriculture Reference
In-Depth Information
Greensand is essential for a TLO grow running to its full potential
Oyster Shells
You'll hear me talking about calcium a lot, and rightly so. It is one of the most important elements when
TLO growing in a living soil mix. I treat it much more like a primary nutrient than a secondary nutrient.
Not only dooyster shell products bring calcium to the TLO table, soto speak, they are also responsible for
creating a very bacteria-friendly soil mix, especially the crushed oyster shells. Now, there are two grades
of these processed oyster shells: one is almost in a powder form, and this is called “ground oyster shell”
or “oyster shell flour” by some brands and nurseries. The other form is called “crushed oyster shell” and it
is in smaller pieces about the size of a dime. These small pieces are like little artificial reefs in the ocean
in many ways. The oyster shell surface is very porous and buffers the pH upwards; those are two very
bacteria-friendly things right there. The pH is only affected in the direct vicinity of the oyster shell pieces.
Thisiswonderfulnewsforthefungi,whichcangrowthroughthesoilmixmostlyavoidingtheoystershell
pieces.
