Grow Organic
Calphos Soft Rock Phosphate for Fertile Soil
Calphos Soft Rock Phosphate for Fertile Soil
Calphos Soft Rock Phosphate is a natural source of phosphorus and calcium that boosts soil fertility and supports strong root development. This finely ground mineral powder provides essential nutrients to promote vigorous plant growth, improve flowering, and enhance fruit and vegetable production. Ideal for natural gardening, Calphos releases nutrients slowly over time, offering long-term benefits for soil health.
Phosphorus supports energy transfer, root establishment, and bloom formation, while calcium strengthens cell walls and increases plant resilience. The product can be applied before planting or used as a top dressing during the growing season. It averages 20% P2O5 (3% immediately available) and 18% calcium, with recommended use of 5 lb per 100 square feet or 1 ton per acre on phosphate-deficient soils. For trees and perennials in vegetable gardens, apply 1–10 lb per planting hole, depending on plant size. It can provide phosphorus and calcium for up to five years after application, depending on the crop, and it improves soil microbial activity while reducing nutrient loss.
📋 Product summary:
- Averages 20% P2O5 (3% immediately available) and 18% calcium
- Slow-release formula supports long-term soil health
- Apply before planting or as a top dressing; 5 lb/100 sq ft or 1 ton/acre
- For trees and perennials, 1–10 lb per planting hole; provides P and Ca for up to five years
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📦 Nationwide shipping policy & returns
📦 Nationwide shipping policy & returns
NATIONWIDE SHIPPING:
Some free shipping products may be limited to the lower 48 states, as indicated by our shipping estimator tools and checkout cart. Outdoor living, home, and garden items ship nationwide. Standard shipping fees are confirmed at checkout based on your address and provider selection. Free shipping items incur zero fees at checkout. Tracking details are emailed instantly upon order fulfillment.
NATIONWIDE SHIPPING RETURNS: 30 day returns.
We accept returns of unused products that are defective or not defective. Your return must be processed within 30 days of the date of purchase. We do not process exchanges. We will provide a shipping label by email, you are responsible for bringing the return to the shipping provider.
FREIGHT PRODUCT RETURNS: no returns or exchanges.
There are no returns, exchanges or refunds for products delivered via freight. REFUNDS: The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the returned product is received and processed.
NATIONWIDE PRODUCT REFUNDS:
The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the order is canceled and the returned product is received and processed.
Let customers speak for us
Plant was well packed and shipment was very fast. Received a very nice fully rooted plant in the pot!
The organic garden soil is doing very well in my garden bed. The company was professional, nice, and accommodating to my needs. They provide many types of things for your landscaping at a reasonable price.
Product was delivered promptly and the quality of the product was very good, as hoped for. I was thrilled to receive the product so quickly! Thank you!
Product is great. Didn't care for having to pay am extra $17 tariff to UPS to get it delivered, but I guess that's not your doing. Thank you Mr. President.
My new babay arrived safely and only lost two little leaves so far. The first one I ordered from different shop arrived with two leaves attached that fell off within ten minutes of unboxing and 22 leaves that had came off during shipping. So glad she arrived looking as beautiful as i was hoping. Also had a surprise red arrow syngonium cutting that’s beautiful. Also customer service was amazing. Will definitely order from them again. Hoghly recommend this shop.
Great flag and it works well on our hangar ceiling. A little worried it wouldn't arrive in time for our event but it did.
Enjoyed putting them together
I think I’m in love! This beauty came delicately packaged. Seemed to have no stress at all from shipping. I live in Miami, I was worried about shipping all the way from California. To my surprise she arrived well taken care of already. I can tell this grower takes pride in caring for these babies. Shipping was fast. I just ordered again same day!
Great service and great product. Delivery was quick. Good communication.
lovely olive jar, attractive to keep on display. And useful too.
Fast delivery . Product exactly matches description. Easy to contact with same day replies. We will use them again.
Great job from growing to shipping
Quality was excellent. Perfect for my Dad’s grave site, honoring a proud Marine.
Appreciate the extra effort to get the product to me when needed. The delivery was made with speed and consideration, very much appreciated
Very nice slim design. They hold the poles close to the wall and well organized. Very simple install
