Thank you again for a great 2020 Bulk Order! The 2020 Bulk Order has closed. This site will reopen for orders on January 1st, 2021. Questions? Contact Nora, We look forward to supplying you in 2021!

Soft Rock Phosphate (Calphos Colloidal) 0-2-0-0-20




Natural untreated phosphate clay; 2% readily available phosphorous, 20-21% calcium and trace minerals. P levels determine application rate. Can help sandy soils with water retention. May not be allowed for certified organic use outside of Massachusetts and Connecticut. Check with your local certifier.

OGS, 5# $5/ 50# $21


Additional information


5#, 50#