Quote:
Originally Posted by sirdoofus
I am using silica pool filter sand as recommended by Ty Taylor - I haven't been able to find the horticultural sand or clean course sand as recommended by PR Giants around here, but the pool filter sand seems like a reasonable substitute as its fairly course without much in the way of fines. I did mix in a small amount of powdered organic fertilizer.
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When I shipped Hector and Ty their A'ea'e rhizomes I explained to them the benefits of planting in clean course sand but they both had difficulties finding that grain size and instead decided to substitute it with silica pool filter sand.
It's important to understand why just about any grain size will work and how the different grain sizes affect performance.
Clean sand breathe at a constant rate and has no organic material decaying near the rhizome. When organic material is added the soil will breathe based on the changing moisture levels which is much more difficult to control.
Clean sand keeps the aeration constant and simple.