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10 bestOutdoor Cannabis Fertilizerof September 2025

112M consumers helped this year.

1

MARPHYL Organic Liquid Fertilizer – Indoor & Outdoor House Plant Fertilizer - All-Purpose Nutrient-Rich Plant Food - Soil Enhancer for Garden, Flowers, Vegetables, Succulents, Bamboo, Hydroponics
MARPHYL Organic Liquid Fertilizer – Indoor & Outdoor House Plant Fertilizer - All-Purpose Nutrient-Rich Plant Food - Soil Enhancer for Garden, Flowers, Vegetables, Succulents, Bamboo, Hydroponics

MARPHYL

9.8

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2

Miracle-Gro Water Soluble All Purpose Plant Food - 1.5kg
Miracle-Gro Water Soluble All Purpose Plant Food - 1.5kg

Miracle-Gro

9.6

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3

Miracle-Gro Water Soluble Bloom Booster Plant Food - 1.5Kg
Miracle-Gro Water Soluble Bloom Booster Plant Food - 1.5Kg

Miracle-Gro

9.4

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4

Miracle-Gro Water Soluble Plant Food 20-20-20 Green
Miracle-Gro Water Soluble Plant Food 20-20-20 Green

Miracle-Gro

9.1

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5

General Hydroponics Flora Series FloraGro FloraBloom FloraMicro 1 Litre 1 Quart
General Hydroponics Flora Series FloraGro FloraBloom FloraMicro 1 Litre 1 Quart

General Hydroponics

8.8

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Related productsUp to 42% off

Strive Fertilizer Starter Kit Combo - Veg + Bloom General Hydroponic Nutrients - Premium Indoor, Outdoor and Soil Growing Plant Food - Enhancer - Booster for Vegetables, Succulents, Flowers

Strive Fertilizer Starter Kit Combo - Veg + Bloom General Hydroponic Nutrients - Premium Indoor, Outdoor and Soil Growing Plant Food - Enhancer - Booster for Vegetables, Succulents, Flowers

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General Hydroponics FloraGro Fertilizer, 1-Quart

General Hydroponics FloraGro Fertilizer, 1-Quart

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Gaia Green Organic 4-4-4 All Purpose Fertilizer 2kg

Gaia Green Organic 4-4-4 All Purpose Fertilizer 2kg

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Advanced Nutrients pH Perfect Hydroponic Nutrients: Bloom, Micro and Grow 1-Liter PACK OF 3

Advanced Nutrients pH Perfect Hydroponic Nutrients: Bloom, Micro and Grow 1-Liter PACK OF 3

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17% off

6

Advanced Nutrients Bloom, Micro & Grow, 1 L Each
Advanced Nutrients Bloom, Micro & Grow, 1 L Each

Advanced Nutrients

8.6

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7

Advanced Nutrients Bloom pH Perfect Fertilizer, 1-Liter
Advanced Nutrients Bloom pH Perfect Fertilizer, 1-Liter

Advanced Nutrients

8.3

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8

Gaia Green 2-8-4 Power Bloom - great for bigger flowers, more tomatoes, and healthier plants
Gaia Green 2-8-4 Power Bloom - great for bigger flowers, more tomatoes, and healthier plants

Gaia Green

8.0

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9

Green Rush Nutrients Organic Double Pack - Leafy Green Grow & Beefy Bud Bloom Combo for Veg & Bloom (500g Each)
Green Rush Nutrients Organic Double Pack - Leafy Green Grow & Beefy Bud Bloom Combo for Veg & Bloom (500g Each)

Green Rush Nutrients

7.7

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10

General Hydroponics GLCMBX0009 Calimagic & Flora GRO, Micro & Bloom Combo, 1 Quart Fertilizer
General Hydroponics GLCMBX0009 Calimagic & Flora GRO, Micro & Bloom Combo, 1 Quart Fertilizer

General Hydroponics

7.4

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