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Calphos Soft Rock Phosphate - Regular Powder
(50 lb)

Colloidal Phosphate for Slow-Release

Brand: Calphos    Item Number: F2101

$19.99

In Stock! Ships from Northern CA.

$19.99

In Stock! Ships from Northern CA.

Buy Big, Save Big! As low as $14.99 each!
  • Buy 10 for $17.99 each and save 11%
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  • Buy 400 for $14.99 each and save 26%

Description

The best natural source of phosphorus and calcium. It is comprised of the bony structures of prehistoric marine creatures mined in Florida from the best deposit in the country. An immediately available and a long-term source of phosphorus. Not the same as the hard rock phosphate, sold by most nurseries and farm suppliers, which is not nutritionally as readily available.

  • Averages 20% P2O5 (3% immediately available), 20% Ca
  • Soft Rock Phosphate should be applied and worked in prior to planting
  • Use at 5 lb/100 sq.ft. or 1 ton/acre on phosphate deficient soils, less on fertile soils
  • Trees and perennials, use 1-10 lb per planting hole, depending on plant size
  • Supplies P and Ca for up to 5 years after application, depending on the crop

Characteristics

Brand Calphos Size 26 – 50 lbs
Fertilizer Type Powdered/Granulated Major Nutrients Over 3% Phosphorus, Calcium, Trace Minerals
Best Use Flowers, Vegetables, Fruit Nutrient Release Rate Long-term (4+ Months)
Use as Foliar No Animal-Based No
Brand Calphos
Size 26 – 50 lbs
Fertilizer Type Powdered/Granulated
Major Nutrients Over 3% Phosphorus, Calcium, Trace Minerals
Best Use Flowers, Vegetables, Fruit
Nutrient Release Rate Long-term (4+ Months)
Use as Foliar No
Animal-Based No

Useful Information

MSDS

Videos & Articles

Videos

Articles

September 19, 2014 - Peaceful Valley
Why Plant a Cover Crop? To provide erosion control. To build the soil’s organic matter and humus content and improve the structure. To increase the microbial activity and biomass in the topsoil and provide… read more »
September 27, 2012 - Charlotte from Peaceful Valley
Why do we plant bulbs? So they’ll bloom! What makes bulbs bloom? Phosphorus. Phosphorus is the P in the N-P-K numbers on fertilizers. Phosphorus is a little bit sneaky though—and we’ll… read more »
April 18, 2012 - Charlotte from Peaceful Valley
Double digging revitalizes garden soil and gives it better tilth. It’s one of the basic practices of “French intensive” or “biointensive” organic gardening. French intensive… read more »
April 26, 2011 - Kalita from Peaceful Valley
An old world plant, grapes have been cultivated by humans for thousands of years. References to grape growing are found as far back as 1000 BC. There are several 100 year and older grape vines in established… read more »
March 28, 2011 - Kalita from Peaceful Valley
Have you had enough yet?  What is helping me through this soggy spring (Yes Spring, Happy Equinox!) are my cold frames and covered beds. Remember the ridiculously warm snap we had for about five weeks… read more »
View additional resources for "Calphos Soft Rock Phosphate Regular Powder F2101" »

Shipping Information

Does not qualify for Flat Rate Shipping. Cannot be combined with other items in a package, due either to its size or manufacturer packaging.

Shipping Weight: 55.00 lbs. Dimensions: 20"L x 13"W x 4"H

Reviews

Great for my soil type

This has been my staple when planting directly in my otherwise unamended soil! My plants love it!

Reviewed by on

Foothill Staple

This is a really cost effective, natural phosphorus supplement. Living in the foothills with phosphorus deficient soil this is a must have.

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