Oyster Shell Flour (50 lb)

Naturally raise soil pH and boost calcium levels with Pacific Pearl Oyster Shell Flour — a high-quality, organic rock dust fertilizer made from finely ground marine oyster shells. Ideal for gardens, orchards, trees, and compost, this premium soil amendment helps build stronger plants and healthier soil season after season. Key Benefits 96% calcium carbonate for pH adjustment and calcium enrichment Improves soil tilth and nutrient uptake Strengthens plant cell walls and promotes root growth Contains variable particle sizes for both fast and slow nutrient release 100% natural and OMRI Listed for certified organic gardening Also excellent for bocce ball courts and landscape applications Application Rates Use Case Amount Flowers & Vegetables 4–5 lbs per 20 row feet Trees 1 lb per tree or 1–3 lbs

California Proposition 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm; for more information, visit www.P65Warnings.ca.gov.

How Oyster Shell Flour (50 lb) fits a fertility plan

• Provides a liming or calcium-bearing amendment for soils where testing indicates a need.
• Can support pH management and calcium availability when the material is suited to the soil’s existing chemistry.
• The listed particle or pellet form helps gardeners plan spreading, incorporation, and handling.

Application guidance: Use a current soil test to determine whether lime or calcium is appropriate. Applying without test results can raise pH too far or create nutrient imbalances. Spread uniformly at the labeled rate, incorporate where directed, and allow time for reaction before retesting. Wear dust protection and other equipment specified on the package.

Compare related soil pH fertilizers and amendments when building a complete program.