






🌿 Elevate your garden game with Bloom City’s pure Cal-Mag power!
Bloom City Professional Grade Ultra Pure Cal-Mag Fertilizer delivers a potent 128 oz liquid formula designed to correct calcium and magnesium deficiencies, supporting robust plant structure and enhanced nutrient uptake. Ideal for both soil and hydroponic systems, this USA-made fertilizer ensures steady, healthy growth for all plant stages with easy, no-fuss application.












| ASIN | B073ZP47ZN |
| Best Sellers Rank | #4,047 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #200 in Garden Fertilizers |
| Brand | Bloom City |
| Date First Available | August 26, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 8 pounds |
| Item model number | Cal-Mag UltraPure | Plus Micros |
| Liquid Volume | 1 Gallons |
| Manufacturer | Bloom City |
| Number of Items | 1 |
| Package Dimensions | 11.85 x 6.14 x 6.1 inches |
| UPC | 841401125158 |
| Unit Count | 128 Ounce |
G**E
Great for correcting nutrient deficiencies
This is the only general micronutrient supplement I ever buy. I first got it when my younger plants started showing signs of nutrient deficiencies outside of NPK nutrients. My plants showed signs of recovery after one watering and a few foliar applications. Some people might not need it, especially if they are growing in properly enriched soil, but I have water that's softened at a municipal level. As a result, some minerals have been removed from my water; this product helps restore those and add others that are good for all plant growth stages, from new plants to blooming plants. Use is simple. Just measure out however much I want to add to my 2-gallon can, dump it in, add water, and water my plants as usual. No worrying about presoaking anything or lots of stirring to mix in powders. (for simplicity, I use a different fertilizer bottle's cap to measure out ~8ml when filling my watering can) The bottle cap/lid and recommended measurements have changed from the previous bottle I bought. The ingredients list is the same, as well as the concentration percentages of the minerals. They also separate the use guidelines/directions differently between them. I'll only mention the amount differences. New: watering can: 1tsp (2.5-5ml)/gallon Hose end sprayer: 1tsp (5ml) approx 1:750 ratio Foliar spray: 2-4tsp (10-20ml)/gallon Old: Grow phase: 2-4ml/gallon Bloom phase: 3-5ml/gallon Sprayer instructions: 20-40ml/gallon Not sure why they changed the amounts, but it's helpful to know the ratio for using with a hose end sprayer. Overall, great value for money in my opinion.
M**Y
Calcium magnesium fertilizer
I grow bell peppers and other types of peppers in my garden. Sometimes they need calcium and magnesium to fertilize them or they start getting the source fights on them. I decided to try this one to see if it would work. I use this and within a week, my plants perked up really well. The pepper started looking very nice and green and healthy. I’m very satisfied with this product. I would suggest this for anybody this fertilizer is good quality it’s effective and being organic makes it even better.
W**R
Works as advertised
I initially got this for my raised garden tomatoes. When I noticed my bell pepper plants in growbags were experiencing end rot, I used this on them. Probably 2 doses in a month. From that point forward, it cured the end rot in the new bells. Seemed to act quick and I haven't had the need to add anymore this season. This was great to have on hand. Would order again.
A**R
Noticeable difference in a couple days.
This stuff works well. I noticed a significant increase in my plants health and size after about 2 days. It gave my plants a healthy green vibrant look. My only complaint is with whoever shipped it. It had a seal but was missing the lid. Luckily, the lid from my bai drink bottle ended up fitting perfectly.
E**T
GREAT!
GREAT!
A**R
Good brand of stuff
Perfect no problem.
J**E
great for vegies
a must for my tomatoes
A**R
You need this.
According to science plants don't need this. According to experience it could be the one thing you're missing. It only takes a tiny amount 2 maybe 3 times per growing season. I will never 'not' use it again!
Trustpilot
1 month ago
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