Calphos Soft Rock Phosphate (5 lb bag)

Calphos Soft Rock Phosphate in a 5 lb bag is a convenient choice for raised beds, planting holes, and smaller garden projects where a soil test indicates a need for phosphorus and calcium. The finely ground mineral amendment releases nutrients gradually and can be incorporated before planting or blended into compost. Suitable for vegetable beds, flowers, bulbs, and perennial planting areas, it provides a smaller quantity for precise planning without storing a bulk bag.

• Approximately 20% P₂O₅, including 3% available phosphate
• Approximately 18% calcium
• Compact size for targeted applications

Organic status: This repackaged 5 lb size is not represented as organic or as listed or approved for certified organic production.

How Calphos Soft Rock Phosphate (5 lb bag) fits a fertility plan

• Provides phosphorus to support root development, flowering, seed formation, and fruiting when soil levels and crop demand justify an application.
• Its low or zero nitrogen analysis can fit programs that need phosphorus without a large additional nitrogen input.
• The package size and formulation shown in the title help match the product to planting holes, beds, containers, orchards, or larger areas as allowed by the label.

Application guidance: Phosphorus moves slowly in many soils and can accumulate when overapplied. Use soil-test results, place or incorporate only as directed, and account for phosphorus already supplied by compost and other fertilizers. Follow label rates for the specific crop and growth stage.

Compare related phosphorus fertilizers when building a complete program.