Humboldt Nutrients

Click here to view the Humboldt Nutrients feed charts.

Unlike our competition, we never buy liquidated inventory or old, deeply-discounted, soon-to-be-expired nutrients. We receive new products every few days, so when you buy from GYOstuff, rest assured you’re buying only the freshest nutrients for your plants.

     
    1 - 60 of 89 items
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    Master-A, 32 oz. Master-A, 1 gal. Master-A, 2.5 gal.
    Master-A, 32 oz.Master-A, 1 gal.Master-A, 2.5 gal.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's advanced grower 2 part nutrient solution.

    $24.58

    $22.89

    $73.73

    $65.99

    $153.60

    $137.99

    Master-A, 5 gal. Master-B, 32 oz. Master-B, 1 gal.
    Master-A, 5 gal.Master-B, 32 oz.Master-B, 1 gal.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's advanced grower 2 part nutrient solution.

    $270.38

    $248.99

    $24.58

    $22.89

    $73.73

    $66.99

    Master-B, 2.5 gal. Master-B, 5 gal. Humboldt Nutrients Grow 32 oz.
    Master-B, 2.5 gal.Master-B, 5 gal.Humboldt Nutrients Grow 32 oz.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's advanced grower 2 part nutrient solution.

    Humboldt's vegetative portion of their 3 part nutrient solution.

    $153.60

    $137.99

    $270.38

    $248.99

    $12.28

    $11.99

    Humboldt Nutrients Grow 1 gal. Humboldt Nutrients Grow 2.5 gal. Humboldt Nutrients Micro 32 oz.
    Humboldt Nutrients Grow 1 gal.Humboldt Nutrients Grow 2.5 gal.Humboldt Nutrients Micro 32 oz.

    Humboldt's vegetative portion of their 3 part nutrient solution.

    Humboldt's vegetative portion of their 3 part nutrient solution.

    Humboldt's Micro formula for their 3 part nutrient solution.

    $31.35

    $29.99

    $68.82

    $61.99

    $16.60

    $15.49

    Humboldt Nutrients Micro 1 gal. Humboldt Nutrients Micro 2.5 gal. Humboldt Nutrients Micro 5 gal.
    Humboldt Nutrients Micro 1 gal.Humboldt Nutrients Micro 2.5 gal.Humboldt Nutrients Micro 5 gal.

    Humboldt's Micro formula for their 3 part nutrient solution.

    Humboldt's Micro formula for their 3 part nutrient solution.

    Humboldt's Micro formula for their 3 part nutrient solution.

    $38.12

    $35.49

    $87.24

    $78.99

    $167.13

    $149.99

    Humboldt Nutrients Micro 15 gal Humboldt Nutrients Bloom 32 oz. Humboldt Nutrients Bloom 1 gal
    Humboldt Nutrients Micro 15 galHumboldt Nutrients Bloom 32 oz.Humboldt Nutrients Bloom 1 gal

    Humboldt's Micro formula for their 3 part nutrient solution.

    Humboldt's bloom portion of their three part nutrient solution.

    Humboldt's bloom portion of their three part nutrient solution.

    $451.27

    $419.99

    $12.28

    $11.99

    $31.35

    $30.49

    Oneness 32 oz. Oneness 1 gal Oneness 2.5 gal.
    Oneness 32 oz.Oneness 1 galOneness 2.5 gal.

    Humboldt's 1 part nutrient solution for beginner gardeners.

    Humboldt's 1 part nutrient solution for beginner gardeners.

    Humboldt's 1 part nutrient solution for beginner gardeners.

    $25.21

    $7.59

    $89.36

    $79.99

    $204.83

    $184.34

    Oneness 5 gal. Big Up Powder 4 oz. Big Up Powder 8 oz.
    Oneness 5 gal.Big Up Powder 4 oz.Big Up Powder 8 oz.

    Humboldt's 1 part nutrient solution for beginner gardeners.

    Humboldt's bloom booster for robust fruits and flowers.

    Humboldt's bloom booster for robust fruits and flowers.

    $383.40

    $344.99

    $18.14

    $16.99

    $31.51

    $28.99

    Big Up Powder 1 lb. Big Up Powder 5 lb. Big Up Powder 10 lb.
    Big Up Powder 1 lb.Big Up Powder 5 lb.Big Up Powder 10 lb.

    Humboldt's bloom booster for robust fruits and flowers.

    Humboldt's bloom booster for robust fruits and flowers.

    Humboldt's bloom booster for robust fruits and flowers.

    $52.52

    $47.99

    $210.80

    $191.99

    $399.15

    $356.99

    Big Up Powder 20 lb. Calyx Magnum, 32 oz. Calyx Magnum, 1 gal
    Big Up Powder 20 lb.Calyx Magnum, 32 oz.Calyx Magnum, 1 gal

    Humboldt's bloom booster for robust fruits and flowers.

    Multiple nutrient supplement for early growth, improves hardiness of plant and overall health.

    Multiple nutrient supplement for early growth, improves hardiness of plant and overall health.

    $727.95

    $649.99

    $19.32

    $48.50

    $44.99

    DeuceDeuce 32 oz. DeuceDeuce 1 gal. DeuceDeuce 2.5 gal.
    DeuceDeuce 32 oz.DeuceDeuce 1 gal.DeuceDeuce 2.5 gal.

    Improves root health and mass resulting in increased blooms and a hardier plant.

    Improves root health and mass resulting in increased blooms and a hardier plant.

    Improves root health and mass resulting in increased blooms and a hardier plant.

    $20.95

    $19.49

    $73.53

    $65.99

    $172.95

    $154.99

    DeuceDeuce 5 gal. Equilibrium Natural, 32 oz Equilibrium Natural, 1 gal
    DeuceDeuce 5 gal.Equilibrium Natural, 32 ozEquilibrium Natural, 1 gal

    Improves root health and mass resulting in increased blooms and a hardier plant.

    Calcium and magnesium supplement for soil and hydroponics.

    Calcium and magnesium supplement for soil and hydroponics.

    $329.83

    $299.99

    $22.42

    $20.99

    $77.95

    $72.49

    Equilibrium Natural, 2.5 gal FlavorFul 32 oz. FlavorFul 1 gal.
    Equilibrium Natural, 2.5 galFlavorFul 32 oz.FlavorFul 1 gal.

    Calcium and magnesium supplement for soil and hydroponics.

    Humic acid supplement, increases nutrient uptake resulting in better overall growth.

    Humic acid supplement, increases nutrient uptake resulting in better overall growth.

    $185.24

    $165.99

    $18.44

    $17.49

    $61.45

    $57.99

    FlavorFul 2.5 gal. FlavorFul 5 gal. FlavorFul 15 gal.
    FlavorFul 2.5 gal.FlavorFul 5 gal.FlavorFul 15 gal.

    Humic acid supplement, increases nutrient uptake resulting in better overall growth.

    Humic acid supplement, increases nutrient uptake resulting in better overall growth.

    Humic acid supplement, increases nutrient uptake resulting in better overall growth.

    $141.34

    $129.99

    $245.79

    $223.99

    $631.80

    $569.99

    Ginormous 1 gal. Ginormous 2.5 gal. Ginormous 5 gal.
    Ginormous 1 gal.Ginormous 2.5 gal.Ginormous 5 gal.

    Amazing foliar spray for early flowering, allows for quicker transition and larger fruits.

    Amazing foliar spray for early flowering, allows for quicker transition and larger fruits.

    Amazing foliar spray for early flowering, allows for quicker transition and larger fruits.

    $104.95

    $93.99

    $226.60

    $212.99

    $409.95

    $359.99

    Honey Hydro Carbs 32 oz. Honey Hydro Carbs 1 gal. Honey Hydro Carbs 5 gal.
    Honey Hydro Carbs 32 oz.Honey Hydro Carbs 1 gal.Honey Hydro Carbs 5 gal.

    Sugars and carbs for improved flavor and aroma in hydroponic plants.

    Sugars and carbs for improved flavor and aroma in hydroponic plants.

    Sugars and carbs for improved flavor and aroma in hydroponic plants.

    $13.80

    $12.99

    $46.37

    $42.99

    $175.47

    $156.99

    Honey Organic ES 32 oz. Honey Organic ES 1 gal. Honey Organic ES 2.5 gal.
    Honey Organic ES 32 oz.Honey Organic ES 1 gal.Honey Organic ES 2.5 gal.

    Organic source of sugar and carbs for soil and coco gardens. Improves flavor and aroma of plants.

    Organic source of sugar and carbs for soil and coco gardens. Improves flavor and aroma of plants.

    Organic source of sugar and carbs for soil and coco gardens. Improves flavor and aroma of plants.

    $24.58

    $22.89

    $77.43

    $69.99

    $176.95

    $158.99

    Honey Organic ES 5 gal. Hum-bolt humic 32 oz. Hum-bolt Humic 1 gal.
    Honey Organic ES 5 gal.Hum-bolt Humic 32 oz.Hum-bolt Humic 1 gal.

    Organic source of sugar and carbs for soil and coco gardens. Improves flavor and aroma of plants.

    Humic acid supplementation for increased nutrient uptake, resulting in better overall plant growth.

    Humic acid supplementation for increased nutrient uptake, resulting in better overall plant growth.

    $317.08

    $283.99

    $18.44

    $17.29

    $61.45

    $56.99

    Hum-bolt Humic 2.5 gal. Hum-bolt humic 5 gal. Hum-bolt Humic 15 gal
    Hum-bolt Humic 2.5 gal.Hum-bolt Humic 5 gal.Hum-bolt Humic 15 gal

    Humic acid supplementation for increased nutrient uptake, resulting in better overall plant growth.

    Humic acid supplementation for increased nutrient uptake, resulting in better overall plant growth.

    Humic acid supplementation for increased nutrient uptake, resulting in better overall plant growth.

    $141.34

    $128.99

    $245.79

    $223.99

    $631.80

    Humboldt Roots, 50 ml Humboldt Roots, 125 ml Humboldt Roots, 250 ml
    Humboldt Roots, 50 mlHumboldt Roots, 125 mlHumboldt Roots, 250 ml

    Highly concentrated organic root stimulant.

    Highly concentrated organic root stimulant.

    Highly concentrated organic root stimulant.

    $23.11

    $21.49

    $44.12

    $40.99

    $73.53

    $65.99

    1 - 60 of 89 items