SKU: 28937487349
calcium phosphate fertilizer for plants

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

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Description

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

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: 28937487349

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Mitchell N.
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★★★★★ 5
Awesome shoe, very comfortable, once you find your size.
Size: 8.5 Wide, Color: Black Crazy Horse
They run large, recommend going to a store to try on before you buy.
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Reviewed in the United States on March 17, 2026
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Damon Hickey
Battle Creek, US
★★★★★ 5
Good enough for Trump, good enough for me.
Size: 9, Color: Black Crazy Horse
Not gonna lie, the only reason I first bought these were because Trump likes this brand of shoes and the fake media ran a story about it. Once I got them and tried them on I was shocked just how comfortable they were. These are very nice and comfortable. I will definitely be buying more from this brand. Nice job Florsheim. 45/47
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Reviewed in the United States on March 17, 2026
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omar
Port Orchard, US
★★★★★ 5
Color and comfort
Size: 10, Color: Brown Crazy Horse
Same as shown, leather is soft and comfy.. a perfect semi formal pair
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Reviewed in the United States on April 25, 2026
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Mostlygood
Birmingham, US
★★★★★ 5
Excellent shoes - good fit, nice look.
Excellent shoes - great value for money! Attractive and well built. Got several unsolicited compliments from co-workers. They are stiff at first and require a bit more of a break-in period than some other shoes I have purchased lately. I hope that is a sign of durability ...
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Amazon Customer
Charlottesville, US
★★★★★ 4
I like them
Size: 12, Color: Black Crazy Horse
Nice quality shoes. Wore them to 2 different weddings and they were comfortable and true to size
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Reviewed in the United States on March 26, 2026

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