10 bestOutdoor Cannabis Fertilizerof April 2026
112M consumers helped this year.
28% off
1
Miracle-Gro Pour and Feed Liquid Plant Food, 1L
Miracle-Gro
9.8
2
envii SeaFeed Xtra – Organic Liquid Seaweed Fertiliser - Multipurpose Outdoor & Indoor House Plant Food - 1 Litre Makes up to 500L
envii
9.6
3
Canna Bloom Booster Liquid 5L
CANNA
9.3
4
Envii Allgrow - Organic Multi-purpose Plant Feed - Liquid Outdoor Plant Food - 1 Litre Makes 330 Litres
envii
9.0
5
Fox Farm Liquid Nutrient Trio Soil Formula - Big Bloom, Grow Big, Tiger Bloom Pint Size (Pack Of 3)
FoxFarm
8.7
OtherUp to 5% off
VitaLink CalMag 1L | Calcium & Magnesium Plant Additive with Beneficial Iron
Xpert Nutrients Cal-Mag Amino Liquid Calcium and Magnesium Fertilizer (1L), Correct the Calcium and Magnesium deficiency, For Strong Plants
Fox Farm FX14091 Big Bloom Liquid Concentrate Fertilizer, 1-Pint, White
Advanced Nutrients GL525050-12 Big Bud Liquid Fertilizer, 250 mL.250 Liter, Brown/A
6
Multi-Mite 2.5L Liquid Seaweed Organic Cold Pressed Concentrate - 100% Natural - Plant Feed Fertiliser Trees Lawn Veg & House Plants Root or Foliar Feed (2.5 LITRES)
Multi-Mite
8.5
7
Fox Farm FX14050 Big Bloom, Grow Big & Tiger Bloom Liquid Fertilizer Nutrient Trio Hydro-Formula, 3/32-Ounce Bottles
FoxFarm
8.2
8
Advanced Nutrients ANBGMBD500 Bloom, Micro, Grow Fertilizer Bundle, 500ml Each, Original Version
Advanced Nutrients
7.9
9
Hydrofarm Fox Farm FX14049 Liquid Nutrient Trio Soil Formula: Big Bloom, Grow Big, Tiger Bloom (Pack of 3-32 Oz. Bottles)
Hydrofarm
7.6
10
Additive / Nutrient Green House Powder Feeding BioGrow (1Kg)
GreenHouse
7.3
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