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Indulge in iconic and innovative Humboldts Secret items curated just for you.
Humboldts Secret Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Enhance Aroma and Flavor of Plants – Potting Soil for Indoor Plants – Energy for Plants – 32 Ounces
724 $
Humboldts Secret Flower Stacker – Flowering Plant Food – Nutrient System for Potting Soil for Indoor & Outdoor Plants – 1 Gallon
3,163 $
Best Plant and Root Enzymes - Humboldts Secret Plant Enzymes - 7,000 Active Units of Enzyme per Milliliter. (2 Ounce)
416 $
Humboldts Secret Calcium, Magnesium and Iron Supplement – Hydroponic Supplies – Liquid Nutrient Fertilizer – Supports Vegetative and Flowering Stage – 1 Gallon
1,399 $
Humboldts Secret Best Flowering Plant Food Flower Stacker - Let Your Flowers Mature to Their Maximum Potential (32 Ounce)
2,069 $
Humboldts Secret Tree Trunk - Silicate Additive - Advanced Nutrients - Helps Plants Flourish - Indoor Plant Food - Hydroponic Nutrients - Liquid Fertilizer (32 Ounce)
669 $
Humboldts Secret Best Plant Food For Plants and Trees Golden Tree, Explosive Growth, Yield Increaser, Dying Plant Rescuer, Use on Flowers, Roses, Fruit, Vegetables, Tomatoes, Organic (2 Ounce)
1,639 $
PASEO POR LA MESETA Y LOS VOLCANES.: Diario secreto de Humboldt en España. (HOJAS EN LA HIERBA, Band 4)
203 $
Humboldts Secret Best Flowering Plant Food Flower Stacker - Let Your Flowers Mature To Their Maximum Potential (8 Ounce)
1,079 TT$
Humboldts Secret World's Best Plant Food Golden Tree - Plant Savior, Yield Increaser and More
224 $
World's Best Base Nutrient System: Humboldts Secret Base A & B Bundle - Liquid Nutrient/Fertilizer For The Vegetative & Flowering Stages of Plants (2 Quarts)
1,257 $
Humboldts Secret Flower Stacker – Best Flowering Formula for Bigger Harvests - Flowering Plant Food - Nutrient System for Potting Soil for Indoor Plants & Outdoor Plants - 1 Quart
724 $
Xpert NutrientsEnzymes - (250ML) -Liquid Enzyme Formula, Efficient Plant Nutrient for Indoor and Outdoor
859 $
Humboldts Secret Starter Kit - World's Best Nutrient System: Base A & B, Golden Tree, Flower Stacker, Plant Enzymes and CalMag & Iron
FREE
Humboldts SecretSweet & Sticky (32 Ounce)
2,439 $
Humboldts Secret Calcium, Magnesium & Iron - Liquid Nutrient/Fertilizer For The Vegetative & Flowering Stages of Plants (Quart)
1,869 $
Humboldts Secret Golden Tree: Best Plant Food for Plants & Trees - All-in-One Concentrated Additive - Vegetables, Flowers, Fruits, Lawns, Roses, Tomatoes & More (8 Ounce)
834 $
Humboldts SecretSet of A & B Liquid Hydroponics Fertilizer - World's Best Nutrient System – Hydroponic Nutrients for Outdoor, Indoor Plants – Supports Vegetative and Flowering Stages of Plants
614 $
Sulphate of Ammonia (1kg Bucket) General Garden Fertiliser and Soil Improver, Vegetable Food, Great For Trees, Shrubs, And Hedges, Give An Added Boost to Flowering and Fruiting Plants.
380 $
Humboldts SecretStarter Kit 2 - Indoor & Outdoor Plant Fertilizer and Nutrient System: Base A & B - Golden Tree - Flower Stacker - Plant Enzymes - CalMag & Iron - Sweet & Sticky - Tree Trunk
3,649 $
Humboldts Secret 62% Humidity Packs RH 2-Way | Moisture Absorber & Regulator for Small Containers | Relative Humidity Control Packets with Resealable Bag | 2 Way Humidity Control Packs | Pack of 10
206 $
Humboldts Secret Flower Shield – Powerful Insecticide – Pesticide – Miticide – Fungicide – Bug Spray – Spider Spray – Plant and Flower Protection – Healthy Treatment for Pests and Fungus (8 Ounce)
834 $
Humboldts Secret Starter Kit Pack – World's Best Indoor & Outdoor Plant Fertilizer and Nutrient System: Base A & B – Golden Tree – Flower Stacker – Plant Enzymes – CalMag & Iron
2,409 $
The Invention of Nature: The Adventures of Alexander von Humboldt, the Lost Hero of Science: Costa & Royal Society Prize Winner
166 TT$
Humboldts SecretA & B Liquid Hydroponics Fertilizer - Nutrients for Outdoor, Indoor Plants (8 oz) w/Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Energy for Plants (8 oz)
1,349 $
Humboldts SecretSweet & Sticky – Carbohydrate and Saccharide Energy Source – Energy for Plants – (8 oz) w/Flower Stacker – Best Flowering Formula for Bigger Harvests - Flowering Plant Food (8 oz)
1,129 $
Humboldts SecretA & B Liquid Hydroponics Fertilizer - Nutrients for Outdoor, Indoor Plants (32 oz) w/Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Energy for Plants (32 oz)
2,199 $
Humboldts SecretGolden Tree - All-in-One Concentrated Additive - Vegetables, Flowers, Fruits, & More (2 oz) w/Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Energy for Plants (8 oz)
1,159 $
Humboldts SecretPlant Enzymes – Best Plant and Root Enzymes – 7000 Active Units of Enzyme per ML (2 oz) w/Golden Tree – All-in-One Concentrated Additive – Vegetables, Flowers, & More (2 oz)
241 $
Humboldts Secret Plant Enzymes – Best Plant and Root Enzymes – 7000 Active Units of Enzyme per Milliliter – Quality Plant Food and Plant Fertilizer – Highly Concentrated – 2 Ounce
504 $
Humboldts Secret Everything Outdoor Plant Food - 5-5-5 Liquid Fertilizer with Kelp - All Purpose Plant, Vegetable, Fruit Tree and Lawn Fertilizer (32 Ounce)
255 $
Humboldts Secret Everything Growing Plant Food 20-20-20 Plant Fertilizer - Balanced Blend of Nitrogen, Phosphorus, Potassium, and Kelp - for Lawns, Gardens, Fruit Trees and House Plants (2 lb)
614 $
Humboldts Secret 0-52-34 Monopotassium Phosphate Fertilizer | Bloom Booster MKP Fertilizer, Increase Blooming & Yield | High Purity Water Soluble Fertilizer | 2lb
1,119 $
Humboldts Secret pH Down | Liquid pH Plant Balancer for Soil & Hydroponics Growing System
544 $
Humboldts SecretpH Up and pH Down Control Kit | Liquid pH Plant Balancer for Soil Gardening & Hydroponics Growing System | Optimal Nutrient Uptake for All Plants (8 Ounces)
186 $
Humboldts Secret Fabric Grow Bags - Non Woven Fabric Plant Pots - Reusable Garden Bags - Plant Grow Bags for Indoor and Outdoor Plants - Thick Fabric Pots with Handles (5-Pack) (7 Gallon)
506 $
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