SKU: 5806131382

Calphos Soft Rock Phosphate (25 lb bag)

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Description

Calphos Soft Rock Phosphate (25 lb bag)Boost soil fertility and support strong root development with Calphos Soft Rock Phosphate, a natural source of phosphorus and calcium. This finely ground mineral powder provides essential nutrients that promote vigorous plant growth, improve flowering, and enhance fruit and vegetable production. Ideal for natural gardening, Calphos releases nutrients slowly over time, ensuring long term benefits for soil health. Phosphorus plays a crucial role in

Boost soil fertility and support strong root development with Calphos Soft Rock Phosphate, a natural source of phosphorus and calcium. This finely ground mineral powder provides essential nutrients that promote vigorous plant growth, improve flowering, and enhance fruit and vegetable production. Ideal for natural gardening, Calphos releases nutrients slowly over time, ensuring long-term benefits for soil health.

Phosphorus plays a crucial role in energy transfer, root establishment, and bloom formation, while calcium strengthens cell walls and improves overall plant resilience. For a deeper understanding of phosphorus's impact on plant health, you might find our article on How to Use Fertilizers—Soft Rock Phosphate insightful.

Calphos Soft Rock Phosphate can be applied before planting or used as a top dressing throughout the growing season. For specific guidance on phosphorus application for bulbous plants, refer to our blog post What Phosphorus is Right For Your Bulbs?

Key Benefits:

  • Averages 20% P2O5 (3% immediately available), 18% Calcium
  • Use at 5 lb per 100 square feet or 1 ton per acre on phosphate-deficient soils, less on fertile soils
  • Trees and perennials in vegetable gardens for flowering plants, use 1-10 lb per planting hole, depending on plant size
  • Supplies phosphorus (P) and calcium (Ca) for up to 5 years after application, depending on the crop
  • Provides calcium for strong cell structure and plant resilience
  • Improves soil microbial activity and reduces nutrient loss

Improve soil structure and encourage abundant plant growth with Calphos Soft Rock Phosphate. This natural mineral fertilizer provides essential nutrients that help plants establish deep roots, produce vibrant blooms, and yield high-quality fruits and vegetables.

Learn More About Soil Health and Fertilization:

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SKU: 5806131382

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4.2 ★★★★★
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Dawn
Battle Creek, US
★★★★★ 5
Silky for your hair no frizz
Size: Queen (20" X 30"), Color: 09 - Blue - Zipper, Number of Items: 2
Great quality silky pillowcases for my curly hair , doesnt make your hair frizzy like cotton pillowcases , good communication with seller if needed, bought from this seller numerous times , lots of colors to choose from too, quick shipping .
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Reviewed in the United States on May 25, 2026
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SS
Chelsea, US
★★★★★ 5
Feels heavenly
Size: King (20" X 36"), Color: 14 - Lavender - Zipper, Number of Items: 2
Literally just got it in the mail and fell in love. It's so soft and wasn't being harsh with my beard hair. Hopefully no more split ends! (Good hair protection!) There was no odor to speak of and it fit my pillow perfectly, we got king size, (AKA good compatibility)
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Reviewed in the United States on April 10, 2026
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ZLJ
Natrona Heights, US
★★★★★ 5
Super soft and worth it
Color: Light Grey, Size: 2 Pack King(20"X 36")
Honestly really happy with these pillowcases. They feel super soft and cool when you sleep on them. My hair has been way less messy in the morning too. The quality actually feels pretty nice and the king size fit perfectly. Makes my bed feel a lot more comfortable and expensive looking. Definitely glad I bought them.
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Reviewed in the United States on May 6, 2026
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Shante Anderson
Louisville, US
★★★★★ 5
SO WORTH THE PRICE
Color: Pink, Size: Queen(20"X 30")
I bought these in two colors for my new apartment with some new pillows to go on them because I got a whole new set of sheets and comforter for my bed and I have to say these are some of the softest most comfortable cooling pillow cases ever! The silk is not super great quality but for the price it's totally worth it I've noticed that it takes care of my hair better I never used silk pillow cases before... But I don't think I'll ever go back. And the zip closed with a zipper so they stay on your pillow no problem without sliding around and you having to fix them all the time they're so easy to use and they look perfect. They look exactly like the pictures! Definitely worth the price... Oh, and there's no weird smell or anything these are definitely good quality!
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Reviewed in the United States on December 3, 2025
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Jackie Scott
Grantham, US
★★★★★ 5
Helps hair health.
Color: Lavender, Size: Queen(20"X 30")
Amazingly soft, cool and comfortable. The sizes are accurate so fit pillows easily. We mixed two colors so our bed looks as comfy and inviting with stylish color blending. Hair seems happy!
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Reviewed in the United States on May 8, 2026

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