SF101
$10.00
Oyster Shell Flour A high quality soil conditioner which consists of 96% calcium carbonate and many micronutrients, Oyster Shell provides a long-lasting, steady release of nutrients to help regulate pH levels, improve fertilizer uptake, promote healthy cellular structure and enhance soil tilth. Oyster Shell is also helpful in creating more active habitats for soil microbes in compost piles and worm bins.
This product is not what it would appear from the name, i.e. it's not a product made from crushed oyster shells but rather it's a particular oyster shell mined from the San Francisco Bay from ancient sea deposits made up of very tiny and fragile oyster shells.
FREE SHIPPING on select Oyster Shell Flour!
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For soil building or top dressing, apply at a rate of 1 cup per cubic foot of soil.
Oyster Shell Flour (Replacement for Dolomite Lime)
4 lb - Small Bag:
Dimensions: 8" x 5" x 3.5"
Weight: 4.1 lbs
13 lb - Large Bag:
Dimensions: 12.5" x 8.5" x 5.25"
Weight: 13.0 lbs
25 lb Food Grade Bucket:
Dimensions: 12.5" x 12.5" x 15"
Weight: 25.0 lbs
50 lb Bag:
Dimensions: 20.75" x 14" x 5.25"
Weight: 50.0 lbs
$15.00
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Best oyster shell flour I have used hands down. I put four tablespoons mixed into my initial worm food feedings for every tray on my worm bin when it is fresh and starting a new cycle. This way my vermicompost is buffered plus worms love it and oyster shell in general in soil or compost is a microbial sponge! I also us a bit in my veg teas. Love this stuff!
I would recommend
For a living soil this is an absolute must have product, I was using down to earth for a little bit and the quality of build a soil brands oyster shell is unsurpassed. Will definitely be ordering a lot more of this in the future.
ran this as a replacement for dolomite lime, and i’ve got happy healthy plants to show for it. buildasoil products are always top quality.
Looked good
