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Calcium Nitrate 15.5-0-0 by PowerGrow Systems is a premium, 100% water soluble fertilizer designed to deliver high nitrogen and calcium directly to plants. Ideal for professional and hobby growers alike, it promotes lush vegetative growth while preventing calcium deficiencies such as blossom end rot, especially in tomatoes. Packaged in airtight bags, this 5-pound bulk option offers reliable, American-made quality trusted by thousands.
| ASIN | B071YS779G |
| Best Sellers Rank | #22,315 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #708 in Garden Fertilizers |
| Brand | PowerGrow Systems |
| Brand Name | PowerGrow Systems |
| Coverage | Full |
| Customer Reviews | 4.7 out of 5 stars 2,014 Reviews |
| Global Trade Identification Number | 00180657008496 |
| Item Form | Powder |
| Item Weight | 5 pounds |
| Manufacturer | PowerGrow Systems |
| Mixing Ratio | 12g MasterBlend 4-18-38 fertilizer, 6g Epsom Salts, and 12g Calcium Nitrate in 5 gallons of water |
| Model Number | CALCIUM-NITRATE ( 5 POUNDS)-5LB |
| Number of Packs | 1 |
| Part Number | CALCIUM-NITRATE ( 5 POUNDS)-5LB |
| Specific Uses For Product | Tomato Plant Health |
| Target Species | tomatoes |
| UPC | 180657008496 |
| Unit Count | 80 Ounce |
K**E
Excellent CaNO3 (calcium nitrate) fertilizer
Excellent CaNO3 (calcium nitrate) fertilizer. Very pure, with granules consistent in size. Not inexpensive, but probably the best form of nitrate you can buy, especially during the winter when ammonium toxicity is a concern.
L**N
product
good product, fair price
M**S
Great customer service
Had an issue in shipping, customer service reached out and made good.definitly would use again,and will.great value of product.
A**R
Very effective, just follow instructions
I mix it in my sprayer and feed once every couple of weeks my leafy plants and seedlings responded with noticeably greener foliage. The calcium component also seemed to help my tomatoes avoid common deficiencies I’ve seen before. My only small gripe is that you really have to measure carefully and avoid overuse, or it can be strong on sensitive plants. Still, if you want a good all‑around nitrogen plus calcium boost, this does the job.
A**O
Excelente
Excelente
N**R
Great results
I use this fertilizer on onion plants in tall raised beds every two weeks before they start to bulb. Then no fertilizer at all. This one keeps them making huge foliage and they stay dark green and growing great even after I stop the application and only water every day a little. Very good fertilizer and I have used it for several years. I will buy more.
C**M
It is a clean grade, easy to dissolve.
This is a nice clean dissolving product. It loves to absorb water from the air, be sure to seal it up air tight immediately, and do not use thin plastic bags. I tried a different brand (yellow and red) from the local garden store, which along with being a local source was half of the price per pound. But it was coated in a thick layer of terrible smelling petroleum gloop. Probably to reduce water absorption in handling and storage, but I wouldn't want it in my soil and it would quickly cause problems in a hydroponic system.
D**S
Best hydroponic supply and super fast shipping
This is one component of the Masterblend trio for hydroponic solution, and a useful fertilizer otherwise. These folks seem to be the main distributor for Masterblend and they've always been awesome on all counts. I've been using this in my hydro greenhouse for years and couldn't be happier.
Trustpilot
1 day ago
2 weeks ago