SKU: 10244307969
calcium phosphate fertilizer for plants

calcium phosphate fertilizer for plants Calphos Soft Rock Phosphate (5 lb bag) – Grow Organic

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Description

calcium phosphate fertilizer for plants Calphos Soft Rock Phosphate (5 lb bag) – Grow OrganicEnhance soil fertility and promote strong root development with Calphos Soft Rock Phosphate (5 lb), a natural source of phosphorus and calcium. This slow release mineral fertilizer provides essential nutrients that support plant growth, improve flowering, and encourage fruit and vegetable production. Ideal for organic gardening, it gradually breaks down in the soil, supplying a long lasting source of phosphorus without the risk of leaching. Phosphorus

Enhance soil fertility and promote strong root development with Calphos Soft Rock Phosphate (5 lb), a natural source of phosphorus and calcium. This slow-release mineral fertilizer provides essential nutrients that support plant growth, improve flowering, and encourage fruit and vegetable production. Ideal for organic gardening, it gradually breaks down in the soil, supplying a long-lasting source of phosphorus without the risk of leaching.

Phosphorus is a key nutrient for root establishment, energy transfer, and bloom development, making Calphos an excellent choice for root vegetables, fruiting plants, and flowering ornamentals. In addition to phosphorus, this soft rock phosphate contains calcium, which strengthens plant cell walls and contributes to overall plant resilience. Together, these nutrients support vigorous plant growth and improved yields.

Easy to apply, Calphos Soft Rock Phosphate can be mixed into the soil before planting or used as a top dressing to provide continuous nourishment throughout the growing season. It is suitable for vegetable gardens, orchards, flower beds, and general soil improvement. The finely ground powder ensures efficient nutrient absorption, helping plants thrive in a variety of growing conditions.

Key Benefits:

  • Rich Nutrient Content: Averages 20% P2O5 (3% immediately available), 18% calcium.
  • Slow-Release Formula: Provides phosphorus and calcium for up to 5 years after application.
  • Supports Root Growth: Strengthens root systems and improves plant resilience.
  • Improves Soil Microbial Activity: Enhances beneficial bacteria for better soil health.
  • Reduces Nutrient Loss: Stays in the soil, minimizing runoff and maximizing plant uptake.
  • Versatile Application: Ideal for vegetables, trees, perennials, and general soil enrichment.

Application Guidelines:

  • General Use: Apply 5 lbs per 100 square feet or 1 ton per acre on phosphorus-deficient soils.
  • Trees & Perennials: Use 1-10 lbs per planting hole, depending on plant size.
  • Pre-Planting: Mix into the soil for best nutrient absorption.
  • Top-Dressing: Apply around plants as a slow-release nutrient source.

For larger applications, Calphos Soft Rock Phosphate is also available in a 50 lb bag.

Learn More About Soft Rock Phosphate:

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SKU: 10244307969

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JohnnieBlue
Battle Creek, US
★★★★★ 5
Great Floating Shelves
Color: Oak, Size: 30W x 11.6D x 2H, 2 Pack
Really pleased with the look, feel and quality of these floating shelves. Installation was easier than I imagined and the size fit my space perfectly. And best part - affordable. Would recommend and buy again.
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Reviewed in the United States on April 9, 2026
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Lisa
Lexington, US
★★★★★ 5
Cute and stylish
Color: Oak, Size: 24W x 11.6D x 2H, 2 Pack, Color: Oak, Size: 24W x 11.6D x 2H, 2 Pack
The shelves look super cute in my laundry closet redesign. Not heavy duty, but that’s okay for my purposes.
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Reviewed in the United States on August 14, 2025
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Primarilus
Los Angeles, US
★★★★★ 1
Shelf is nice, bracing is garbage.
Color: Black, Size: 35.6W x 11.6D x 2H, 2 Pack
Just like all the other reviews, it sags. Regardless of how its mounted to the wall, the bracing itself is weak. Shelf is nice though, definitely would have to get different brackets to make this worth it.
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Reviewed in the United States on April 29, 2026
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Gina R.
Omaha, US
★★★★★ 3
Decent shelf
Color: Walnut, Size: 35.6W x 11.6D x 2H, 2 Pack, Color: Walnut, Size: 35.6W x 11.6D x 2H, 2 Pack
They look great and come exactly as described. They were super easy to install and came with everything you need. Sizing is exactly as described. For the price they’re all around a great purchase. I bought these to mount under our tv for video game consoles and they are perfect. However, they do not sit well on the wall. There’s only two mounting points when they should definitely have 3. We had to go get a shelf bracket from lowe’s to get it to sit right and not lean forward. So just beware if you want it to sit flush, you’re going to need something additional. Still worth it for the price!
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Reviewed in the United States on February 6, 2026
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Paiger
Lexington, US
★★★★★ 5
Thanks to Amazon
Color: White, Size: 35.6W x 11.6D x 2H, 2 Pack
Well, one thing I have to say is we got one white shelf and one brown shelf and it did look like the box had been opened. But that being said Amazon was very wonderful and told us to keep it took it off my bill. They didn’t even charge me for it. The assembly was super easy. My husband said it was very easy to install. All he did was paint the brown and white and put it on the wall so we lucked out on that one thank you
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Reviewed in the United States on May 25, 2026

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