Jack's Elementals Calcium Chloride Fertilizer
Calcium moves slowly inside a plant, so new leaves and growing tips show a shortage first. This Jack's Elementals salt gives growers a fast, fully soluble way to add it back. It is technical-grade calcium chloride dihydrate, and it dissolves completely in water. Calcium makes up about 27 percent of the material by weight. Every bit of it is plant available once dissolved. Calcium builds strong cell walls and supports plant structure as new tissue forms. Growers use this salt to correct deficiencies found through soil or tissue testing. It also helps prevent shortages in crops known to run low during fast growth. Poinsettia growers commonly apply it as a fine mist on the leaves. It suits commercial greenhouse crops and many other horticultural systems. Unlike calcium nitrate, it adds calcium without adding nitrogen to the feed. That makes it useful late in a crop when extra nitrogen is unwanted.
Mixing a Calcium Foliar Spray
One dry ounce in 100 gallons of water supplies about 20 ppm calcium. A single ounce weighs 28.3 grams and fills about 6.34 teaspoons. One pound measures roughly 2.11 cups. At that rate, this bag can treat up to about 40,000 gallons of spray. Dissolve the salt fully in part of the water before topping up the tank. Never mix it with phosphorus or sulfate fertilizers in concentrated form. Those combinations form insoluble solids that clog lines and waste nutrients. Spray in the early morning to slow evaporation and improve absorption. Run a trial on a few plants before treating the whole crop. Watch for leaf burn over the next several days and adjust if needed. Keep the bag tightly closed, since the salt pulls moisture from the air. Store it in a cool, dry place away from children.
Key Features
- 27% Calcium: From calcium chloride dihydrate.
- 100% Soluble: Fully plant available.
- Foliar Ready: Common on poinsettias.
- No Added Nitrogen: Calcium without extra N.
- Simple Math: 1 oz per 100 gal gives about 20 ppm Ca.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Jack's Elementals (JR Peters) |
| Product | Calcium chloride dihydrate (CaCl2 x 2H2O) |
| Grade | Technical |
| Calcium (Ca) | 27% |
| Solubility | 100% water soluble |
| Foliar Rate | 1 dry oz per 100 gal (about 20 ppm Ca) |
| Conversions | 1 oz = 28.3 g = 6.34 tsp; 1 lb = 2.11 cups |
| Compatibility | Do not combine with phosphorus or sulfate fertilizers in concentrate |
| Net Weight | 25 lb (11.34 kg) |