# Calcium Nitrate Fertilizer 15.5-0-0

### **Calcium Nitrate Fertilizer 15.5-0-0**

Deliver two of the most in-demand plant nutrients in a single dissolving step with **Calcium Nitrate Fertilizer 15.5-0-0**. This 100% water-soluble formula provides a fast-acting dose of 15.5% nitrogen and 19% calcium, completely free of phosphate and potash.

Nitrogen drives chlorophyll production and lush vegetative growth, while calcium fortifies cell-wall structure in rapidly expanding fruit and leaf tissue. Because the nitrogen is almost entirely fast-acting nitrate, it is plant-available the moment it dissolves. Nitrate is also the preferred nitrogen form for calcium-sensitive crops, as it won't compete with calcium for root uptake the way ammonium does.

**Ideal For:**

-   **Hydroponics & Fertigation:** A clean, completely soluble, phosphate-free nutrient source that leaves zero residue.
    
-   **Vegetable Sidedressing:** Perfect for tomatoes, peppers, and cucurbits to support rapid growth and prevent calcium deficiencies.
    
-   **Foliar Feeding:** Highly effective as a low-rate foliar supplement during phases of rapid vegetative expansion.
    

**Key Features:**

-   **Fast-Acting Formula:** 15.5% Nitrogen and 19% Calcium.
    
-   **Near-Neutral pH:** Safely nourishes plants with a near-neutral effect on your soil's pH levels.
    
-   **Tested & Certified:** CDFA registered and rigorously third-party lab-tested for heavy metals, with results consistently well below required limits.
    

**Important Handling & Application Rules:**

-   **Crucial Mixing Rule:** _Never_ combine calcium with concentrated phosphate or sulfate fertilizers in the same stock tank, as they will form an insoluble precipitate. Keep calcium nitrate in a separate stock tank and combine them only in the final, dilute solution.
    
-   **Application Best Practices:** Always water in thoroughly for dry applications, and apply foliar sprays during cool conditions.
    
-   **Storage:** This product is hygroscopic (readily absorbs moisture from the air). Always store tightly sealed in a dry environment.

## Details

- **Price:** 24.99 USD - 149.99 USD
- **Vendor:** Greenway Biotech, Inc.
- **Type:** Water Soluble Fertilizer
- **Tags:** Calcium Nitrate Fertilizer, Fertigation, Fertilizer, Foliar Feeding, Greenway Biotech, Hydroponics, Inc., Plant Nutrients, Shopify Collective, Vegetable Growing, Vegetable Growth, Water-Soluble Fertilizer

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 2 Pounds | 24.99 USD | In stock |
| 5 Pounds | 31.99 USD | In stock |
| 10 Pounds | 49.99 USD | In stock |
| 25 Pounds | 89.99 USD | In stock |
| 50 Pounds (or 2 x 25 pound bags) | 149.99 USD | In stock |

## Images

- Bag of Calcium Nitrate Fertilizer 15.5-0-0 for hydroponics and plant nutrition
- Calcium Nitrate Fertilizer 15.5-0-0 bag with granules, fast-acting nitrogen and calcium plant nutrient
- Bag of Calcium Nitrate Fertilizer 15.5-0-0 showing fast-acting nitrogen and calcium nutrients for plants
- Bag of Calcium Nitrate Fertilizer 15.5-0-0 showing product label and nutrient details
- Bag of Calcium Nitrate Fertilizer 15.5-0-0 with fast-acting nitrogen and calcium nutrients for plants
- Bag of Calcium Nitrate Fertilizer 15.5-0-0 for plant nutrition and growth

## Additional Information

- **Cargo Denim, Pants:** Calcium Nitrate Fertilizer

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> Source: [Gift From The Land](https://giftfromtheland.shop/products/calcium-nitrate-fertilizer-15-5-0-0-ammonia-calcium-nitrate-15-5-0-0)
> Updated: 2026-09-03