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Supply Solutions
Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

4(3 ratings)

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$31.99at WalmartChecked 8 h ago

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Price facts

  • Lowest price today: $31.99 at Walmart (checked Nov 14, 2026).

Our take on the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

Supply Solutions Calcium Nitrate is a water-soluble granular fertilizer with 15.5% nitrogen, almost all of it in nitrate form, plus 19% calcium. The nitrate nitrogen feeds quick leafy growth while the calcium supports cell walls, fruit firmness and resistance to blossom end rot in tomatoes and peppers. It dissolves cleanly for sprayers, drip irrigation or hydroponics, which puts it ahead of slower soil-applied calcium sources. It carries no phosphorus or potassium, so it works as a supplement alongside a balanced feed rather than a complete one.

Best forTomato and pepper growers fighting blossom end rotHydroponic and fertigation setupsFruit trees and vegetables needing calciumGrowers who want fast nitrate nitrogen
Pros
  • Fully water soluble, dissolves without clogging lines or sprayers
  • High 19% calcium in a plant-available form
  • Nitrate nitrogen acts quickly on leafy growth
  • Works in soil, drip systems and hydroponics
  • Granules are easy to measure and mix
Cons
  • No phosphorus or potassium, so not a standalone feed
  • Nitrate nitrogen leaches readily in sandy or overwatered soil
  • Overuse can push soft, leafy growth at the expense of fruiting
  • Granules absorb moisture and clump if stored poorly

Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds) prices at every store

  • WalmartNew

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    $31.99Checked 8 h ago
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Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds) price history

Lowest price we've seen: $31.99 on Nov 14 at Walmart. Tracked across 1 store since Nov 14.

About the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

Supply Solutions Calcium Nitrate is a water-soluble granular fertilizer with a 15.5-0-0 NPK ratio and 19% calcium. It supplies nitrate nitrogen (14.5%) and water-soluble calcium (19%). Nitrogen supports leaf and stem growth. Calcium supports cell wall strength and helps prevent calcium-related disorders such as Blossom End Rot.

The fertilizer dissolves quickly and completely in water, so it can be applied through sprayers, irrigation or hydroponic systems. It can also be applied to soil around the base of plants or as a side-dress during the growing season. As a foliar spray, it is mixed with water and sprayed onto the leaves. Application rates are given in the directions on the package.

It is used on vegetables, fruits, flowers, trees and hydroponic systems, indoors or outdoors. Tomatoes and peppers are the plants named for it.

Brand
Supply Solutions
Fertilizer type
Synthetic
NPK ratio
15.5-0-0
Nitrogen
14.5% nitrate nitrogen
Calcium
19% water-soluble calcium
Form
Granules
Solubility
100% water soluble
Application
Soil application, foliar spray, fertigation, hydroponics
Recommended use
Fruit, garden, plants, vegetables
Plant categories
Vegetables, fruits, flowers, trees
Location
Indoor, outdoor
Net weight
10 lb

Specifications

Fertilizer type
SyntheticSource
Npk ratio
15.5-0-0Source
Form
GranulesSource

Questions and answers

Does it really prevent blossom end rot?
Calcium supports cell walls, and blossom end rot is tied to calcium reaching the fruit. It helps most when the soil is calcium-poor or watering is uneven, but erratic watering and root damage also cause it.
Can I use it as my only fertilizer?
No. It supplies nitrogen and calcium only, with no phosphorus or potassium. Use it alongside a balanced fertilizer for flowering and fruiting crops.
Will it work in a hydroponic system?
Yes. It is fully water soluble and commonly used in hydroponics and fertigation. Mix at a rate that keeps your nutrient solution balanced with your other salts.
How does it compare with calcium nitrate from other brands?
The analysis, 15.5-0-0 with 19% calcium, is the standard greenhouse grade. The difference is mostly granule quality and how cleanly it dissolves, so compare solubility and purity claims.
Can I use it on lawns and all plants?
It suits vegetables, fruits, flowers, trees and lawns. Nitrate nitrogen is fast, so avoid heavy applications near waterways or on sandy soil where it leaches.
Where is the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds) cheapest?
At Walmart, for $31.99, as of our latest check.
What do buyers say about the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)?
Rated 4 out of 5 from 3 ratings.

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Compare the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

  • MasterBlend 4-18-38 Complete Combo Kit vs Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)
  • Jack's Nutrients Magnesium Sulfate Epsom Salts Water-Soluble Fertilizer, 25lbs vs Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)
  • General Hydroponics MaxiGro vs Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

Buying guides that pick the Supply Solutions Calcium Nitrate 15.5-0-0 + 19% Ca Water Soluble Fertilizer (10 Pounds)

Rec. use
Fruit, Garden, Plant, VegetableSource
Rec location
Indoor, OutdoorSource
Size
10 lbsSource
Weight
10 lbSource
Brand
Supply SolutionsSource
Plant category
Vegetables, Fruits, Flowers, TreesSource
Product net content uom
PoundSource
Product net content parent
10 PoundSource
Net content statement
10lbsSource
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