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Bloom City

Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, Quart (32 oz)

    • Based on 5,048 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Feb 28
Order within 4 hours and 7 minutes
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Size: Quart (32 oz)


Features

  • CONTAINS MORE MICRONUTRIENTS THAN ANY OTHER BRAND: Iron (Fe), Zinc (Zn), Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo), Sulfur (S)
  • BIOACTIVATED FORMULA FOR OPTIMAL NUTRIENT UPTAKE: Calcium and magnesium, Micro-chelated with fulvic acid; if you google it youll see why thats good
  • PREVENTS COMMON GROWTH DEFICIENCIES: Apply Cal-Mag in every stage of growth for strong stalk and leaf health. Apply with every watering for the full benefit
  • COMPATIBLE WITH ANY NUTRIENT SYSTEM: 100% compatible with other nutrient systems, and can help make other minerals more bio-available
  • 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. We choose only the highest quality ingredient sources and manufacturing methods to create the worlds best craft growing nutrient systems

Package Dimensions ‏ : ‎ 8.82 x 3.19 x 3.11 inches; 2 Pounds


Date First Available ‏ : ‎ July 17, 2017


Manufacturer ‏ : ‎ Bloom City


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #4,403 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #88 in Garden Fertilizers


#88 in Garden Fertilizers:


Customer Reviews: 4.6 out of 5 stars 5,048 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Who would have thunk it?
Size: Quart (32 oz)
Cal Mag, Cal Mag, Cal Mag.... it is all I ever hear. I have real hard water, 1 run through the coffee pot and the pot will look like smoked glass with all the calcium in it. It has a bunch of magnesium as well. Why do I need it? I have never seen a deficiency. WOW now I use this all the time. It is better then plant food. I am not sure how/what it is doing. As long as it keeps doing it. I will be a happy person. ... show more
Reviewed in the United States 🇺🇸 on November 19, 2022 by evon
    • Used this along with foxfarm.
Size: Quart (32 oz)
I used this to grow several seasons of herbs and it never let me down. I always got a bountiful harvest. My only problem with this stuff is that it smells not so great so it needs flushed every once in awhile.
Reviewed in the United States 🇺🇸 on December 11, 2022 by Logan
    • Ended my tomato blossom end rot....
Size: Quart (32 oz)
This product was recommended to me in an online forum to add into my Aerogarden hyrdoponic system where I was growing tomatoes....It works very well....I just had to reduce the Aerogarden nutrients from 6 to 5 capfuls and use this as the 6th capful instead....Today is day 571 and the 2 Golden Harvest Cherry Tomato plants are surprisingly still going strong.... ... show more
Reviewed in the United States 🇺🇸 on November 10, 2022 by J. D. Rosow
    • Best on the market.
Size: Quart (32 oz)
Also contains every micronutrient you need! Very fair price for the quart!
Reviewed in the United States 🇺🇸 on November 29, 2022 by D. Scholl
    • Gotta have cal mag
Size: Quart (32 oz)
Fast delivery and the bottle is pretty big, growing autoflower in 5 gal fabric pots, haven't used it yet but will follow up once I do
Reviewed in the United States 🇺🇸 on November 19, 2022 by Sydney
    • Brought out my cherry tomatoes pretty fast
Size: Quart (32 oz)
Functioned just as advertised
Reviewed in the United States 🇺🇸 on November 23, 2022 by RICHARD
    • Seems to have done the trick!
Size: Quart (32 oz)
I was struggling with flower drop on my pepper plant and after doing some research learned that the soil may have been deficient in calcium. I started adding the supplement to the water and my habanero plant stopped dropping flowers and started growing peppers very shortly afterwards. Seems to have done the trick! ... show more
Reviewed in the United States 🇺🇸 on October 24, 2022 by Andrew A Davis
    • Works great for hydroponics
Size: Gallon (128 oz)
Just finished my first year of growing super hot peppers with over 50 hydroponic plants. CalMag really helped them looking great! No deficiencies noted. Once the plants started fruiting I upped the CalMag dose and they were prolific!
Reviewed in the United States 🇺🇸 on October 26, 2022 by BeardedDogs

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