Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, 2.5 Gallon (320 oz)
  • Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, 2.5 Gallon (320 oz)
  • Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, 2.5 Gallon (320 oz)
Brand Bloom City
Item Weight 320 Ounces
Item Form Liquid
Coverage Full
Liquid Volume 2.5 Gallons
  • 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 you’ll see why that’s 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 world’s best craft growing nutrient systems

Product details

  • Package Dimensions ‏ : ‎ 15.5 x 8.5 x 6.5 inches; 20 Pounds
  • Date First Available ‏ : ‎ July 17, 2017
  • Manufacturer ‏ : ‎ Bloom City
  • ASIN ‏ : ‎ B073ZPJBW6
  • Country of Origin ‏ : ‎ USA
  • Best Sellers Rank: #2,088 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
    • #124 in Garden Fertilizers
  • Customer Reviews:
    4.6 4.6 out of 5 stars 5,956 ratings

From the brand


Product Description

Product Header

Key Benefit 1

Key Benefit 2

Key Benefit 3

Key Benefit 4

Use Cases

Multiple applications for pots, garden beds and foliar spray.

Watering Can

Hose end sprayer

Application Type 3

Use in watering can for precision nutrition. Mix 2-4 mL per gallon of water during grow phase, mix 3-5 mL per gallon of water during bloom phase. Use with every watering.

Use with hose end sprayer for larger areas. Use a mixing ratio of 1:100 or 1:200, apply 1-2 times monthly.

Use as a foliar spray for rapid nutrient uptake. Mix with water at 4-8 tsp. per gallon for all stages of growth, apply once weekly.

Plant Growth Series Highlight
CAL-MAG pH Up pH Down Organic CleanKelp Silica Boost Foliar Spray
CAL-MAG pH Up pH Down Organic CleanKelp Silica Boost Organic Foliar Spray
Hero ingredient Calcium & magnesium Multiple bases for soil stability Multiple acids for soil stability Made with seven algae species Naturally sourced silica Bio-available magnesium
Primary benefit Improves plant health Optimized mineral intake Optimized mineral intake Complete plant health & resilience Stronger, larger plants More nutrient absorption
How it works Prevents mineral deficits Controls soil pH levels Controls soil pH levels Promotes root & shoot growth Strengthens cell walls Promotes photosynthesis
Why Bloom City's better More micronutrients & bio-availability Maximized bases for optimized pH control Maximized acids for optimized pH control 100% organic & naturally sourced contents Made from reacted sand & fulvic acid 100% organic & sustainable

Bloom City Values

Big Harvest, Not Big Ag

Sustainable, Natural Sourcing

Keep it Simple, Keep it Safe

Bloom City gives the power of clean, regenerative gardening to the home grower with full-spectrum plant nutrition for bountiful yields in any growing environment.

Our emphasis on environmentally responsible production methods with natural & sustainable input sourcing makes for more bio-available nutrient outputs & safer, cleaner gardens.

Bloom City's nutrient systems are everything you need to grow lush, beautiful gardens without harsh chemical fertilizers. Harness the power of regenerative growing practices to create living soil & vibrant plants.







Bloom City Professional Grade Ultra Pure Cal-Mag Growing Fertilizer, 2.5 Gallon (320 oz)

$83.00  $41.00
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