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Keeps hydro systems clean - our calcium nitrate, when used in Hydroponic setups with ENVY Part I Hydro Special, keeps systems and pumps cleaner as no agricultural preservatives are used that leave an oily skim on water.



Designed for efficient delivery and immediate uptake, this 325 mesh powder can be used in drip irrigation or spray applications. Ultra fine and highly reactive, Calcium 96 is a natural limestone powder that provides immediate availability of this valuable nutrient for plants and microflora.

All-natural and high-quality source of the essential plant nutrient calcium, helping prevent calcium deficiencies that can dimish plant development.

We choose only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Contains more micronutrients than any other brand: Iron Fe, Molybdenum Mo, Zinc Zn, Boron B, Copper Cu, Manganese Mn, Sulfur S.

For organic gardening: tomato-tone is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production.
It produces plump, abundant tomatoes, not unwanted foliage. Can also be used on all vegetables. Made in the usa: product of the Espoma Company. Tomato-tone is ready to use and requires no mixing. The leader in natural organics since 1929. Tomato-tone is environmentally Safe - No sludges or toxic ingredients.


1. Southern Ag
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5 Pound Bag, Southern Ag Calcium Nitrate
#adSouthern Ag #ad - Contains: 15. 5% nitrogen, 19% Calcium - readily water soluble. Excellent source of Calcium and nitrogen. Prevents Calcium deficiency.More information #ad
Brand | Southern Ag #ad |
Manufacturer | Southern Ag #ad |
Weight | 5 Pounds |
Part Number | 01405 |
Model | 01405 |
More information #ad
2. ENVY
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ENVY Solution Grade Calcium Nitrate 15.5-0-0 Prevents Blossom End-Rot from Calcium Deficiency in Tomatoes & Peppers 3.0 lb
#adENVY #ad - Pure & concentrated - with 19% calcium and 15. 5% nitrogen, envy's cano3 boasts supreme Greenhouse Grade quality and high nutrient concentrations. 100% water soluble - using higher-grade ingredients than other manufacturers, we ensure complete solubility and superior solution disbursement.Keeps hydro systems clean - our calcium nitrate, when used in Hydroponic setups with ENVY Part I Hydro Special, keeps systems and pumps cleaner as no agricultural preservatives are used that leave an oily skim on water.
More information #ad
Resealable pouches - all of envy's water soluble line come in resealable pouches and include a measuring scoop for easy long term usage and storage. Great for soil - our greenhouse grade Calcium Nitrate provides an excellent source of Calcium to treat Calcium deficiency and prevent Blossom End-Rot.Brand | ENVY #ad |
Manufacturer | National Liquid Fertilizer #ad |
Height | 8 Inches |
Length | 5 Inches |
Weight | 3 Pounds |
Width | 3 Inches |
More information #ad
3. PowerGrow Systems
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Calcium Nitrate 15.5-0-0 Fertilizer Bulk Pricing 5 POUNDS
#adPowerGrow Systems #ad - Packed by powergrow systems & sold by BGS Supplies - Made in USA. Calcium increases plant resilience and prevents calcium deficiencies.More information #ad
100% agricultural grade fertilizer - Calcium Nitrate 15. 5-0-0 npk. Calcium nitrate is fully water soluble - easy uptake by your plants! High nitrogen level promotes lush green vegetative growth.Brand | PowerGrow Systems #ad |
Manufacturer | PowerGrow Systems #ad |
Weight | 5 Pounds |
Part Number | CALCIUM-NITRATE ( 5 POUNDS)-5LB |
Model | CALCIUM-NITRATE ( 5 POUNDS)-5LB |
More information #ad
4. Down To Earth All Natural Fertilizers
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5 lb, Down to Earth Organic Garden Gypsum Calcium Sulfate
#adDown To Earth All Natural Fertilizers #ad - Down to earth garden gypsum is a five pound box of all natural mineral fertilizer and is listed by the Organic Materials Review Institute OMRI for use in organic production. Prilled, fast acting and easy to apply. Commonly used to reduce soil compaction and increase drainage in heavy clay soils, gypsum is also used to help remediate and revitalize alkaline, sodic or saline soils.More information #ad
Loosens clay. Improves the physical condition of landscape, lawn and garden soils while adding calcium and sulfur. Registered organic Input Material CDFA.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down To Earth All Natural Fertilizers #ad |
Weight | 5 Pounds |
Part Number | DTE-FERT-GardenGypsum-5lb-FOS |
Model | DTE-FERT-GardenGypsum-5lb-FOS |
More information #ad
5. Down To Earth All Natural Fertilizers
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Down to Earth OMRI Organic Solution Grade Calcium 96, 1 lb
#adDown To Earth All Natural Fertilizers #ad - With a high neutralizing value, this solution grade powder can be applied at rates lower than typical Ag lime for fast soil pH changes.Designed for efficient delivery and immediate uptake, this 325 mesh powder can be used in drip irrigation or spray applications. Ultra fine and highly reactive, Calcium 96 is a natural limestone powder that provides immediate availability of this valuable nutrient for plants and microflora.
More information #ad
High quality calcium provides a myriad of benefits to plants, soils and soil biology. Most garden plants prefer a pH between 6. 0 and 7. 0, and proper application rates vary depending on soil-type.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down To Earth All Natural Fertilizers #ad |
Weight | 1 Pounds |
Part Number | DTE-FERT-SOLU-Calcium-1lb-FOS |
More information #ad
6. Down To Earth All Natural Fertilizers
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1 lb, Down to Earth Organic All Natural Oyster Shell Fertilizer
#adDown To Earth All Natural Fertilizers #ad - With 35% calcium, oyster shell is great for use on lawns, vegetable gardens, trees, flower beds, outdoor containers, shrubs and row crops/acreage. Ancient oyster shells are carefully harvested and then ground into small, medium and coarse particles, providing a sustained release of this valuable nutrient.All-natural and high-quality source of the essential plant nutrient calcium, helping prevent calcium deficiencies that can dimish plant development.
More information #ad
Calcium is very important to the biological processes of growing plants and aids in improving structure of soils and building optimum tilth. Down to earth oyster shell is a one pound box of all natural fertilizer and is listed by the Organic Materials Review Institute OMRI for use in organic production.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Central Garden Distribution #ad |
Height | 1 Inches |
Length | 1 Inches |
Weight | 1 Pounds |
Width | 1 Inches |
Part Number | 100523950 |
Model | 100523950 |
More information #ad
7. Bloom City
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Quart 32 oz, Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer
#adBloom City #ad - Prevents common growth deficiencies: Apply Cal-Mag in every stage of growth for strong stalk and leaf health. Compatible with any nutrient system: 100% compatible with other nutrient systems, and can help make other minerals more bio-available.We choose only the highest quality ingredient sources and manufacturing methods to create the world’s best craft growing nutrient systems. Contains more micronutrients than any other brand: Iron Fe, Molybdenum Mo, Zinc Zn, Boron B, Copper Cu, Manganese Mn, Sulfur S.
More information #ad
Bioactivated formula for optimal nutrient uptake: Calcium and magnesium, Micro-chelated with fulvic acid; if you google it you’ll see why that’s good. Contains no harmful edta: unlike other brands, bloom city uses organic chelates and never uses chemicals like EDTA, Healthier for your garden and healtier for the planet. Apply with every watering for the full benefit.Brand | Bloom City #ad |
Manufacturer | Bloom City #ad |
Weight | 2 Pounds |
Part Number | calmag-32-fba |
More information #ad
8. Espoma
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Espoma Organic Tomato-Tone 3-4-6 with 8% Calcium. Organic Fertilizer for All Types of Tomatoes and Vegetables. Promotes Flower and Fruit Production. 8 lb. Bag
#adEspoma #ad - Apply to the soil around the drip line of the plant and then water thoroughly. Contains: tomato-tone is a rich blend of the finest natural & organic ingredients enhanced with our exclusive Bio-tone formula; 3-4-6 Fertilizer analysis with 8% calcium to help prevent blossom end rot.For organic gardening: tomato-tone is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production.
More information #ad
For use on: use tomato-tone organic fertilizer for all types of tomatoes; both heirloom and hybrid. When / how to use: best to use tomato-tone fertilizer every two weeks through the growing season. It produces plump, abundant tomatoes, not unwanted foliage. Can also be used on all vegetables. Made in the usa: product of the Espoma Company. Tomato-tone is ready to use and requires no mixing. The leader in natural organics since 1929. Tomato-tone is environmentally Safe - No sludges or toxic ingredients.
Brand | Espoma #ad |
Manufacturer | Espoma #ad |
Height | 13 Inches |
Length | 8 Inches |
Weight | 8 Pounds |
Width | 4 Inches |
Part Number | TO8 |
Model | TO8 |
More information #ad
9. Grow More
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1-Pint, Grow More 13001 Maxi-Cal 10% Calcium 10-0-0 Fertilizer
#adGrow More #ad - Improves quality of fruits and vegetables. Maxi-cal liquid is a bio-effective formulation that prevents or corrects of physiological calcium and micronutrients deficiencies.More information #ad
Contains 10 percent calcium Plus eight micros. Corrects blossom end rot in tomatoes, peppers, melons and broccoli. Available in 16 oz Pack.Brand | Grow More #ad |
Manufacturer | Grow More #ad |
Height | 8 Inches |
Length | 2.5 Inches |
Weight | 1.5 Pounds |
Width | 2.5 Inches |
Part Number | 13001 |
Model | 13001 |
More information #ad
10. Down To Earth All Natural Fertilizers
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1 Quart, Down to Earth Liquid Calcium Fertilizer Organic Water Soluble 5%
#adDown To Earth All Natural Fertilizers #ad - Completely water soluble and chelated with unique organic acids to enhance utilization and increase foliar absorption. Calcium deficiency can result in poor root development, yellowing of new plant tissue and fruit and vegetable abnormalities such as blossom end rot in tomatoes.More information #ad
Essential for regulation of nutrient uptake, formation and development of cell wall membranes and translocation of proteins and sugars throughout plant tissue. Omri listed. Cdfa registered Organic Input Material. 5. 0% formula.Brand | Down To Earth All Natural Fertilizers #ad |
Manufacturer | Down To Earth All Natural Fertilizers #ad |
Height | 8 Inches |
Length | 5 Inches |
Width | 2 Inches |
Part Number | 721428 |
More information #ad