🍂 Fall Harvest Sale — 10% off storewide with code FALLHARVEST10, thru Oct 31Shop Now

In-store pickup available — select Pickup at checkout (Mon–Fri, 10am–5pm)

Bay Area's wholesale growing supply sourceLearn About Us

Powder & Granular Fertilizers

Water-soluble powders, crystals and slow-release granular fertilizers, from orchid foods and bloom formulas to Osmocote and 25 lb soluble bags.

37 products

Sort

Osmocote Classic 14-14-14 controlled-release fertilizer, 50 lb bag

Osmocote Classic
14-14-14 Controlled-Release Fertilizer - 3 to 4 Month Feed - 50 lb Bag

Sold Out

Osmocote Plus Outdoor & Indoor 15-9-12 smart-release plant food, 8 lb bag

Osmocote Plus Outdoor & Indoor
15-9-12 Smart-Release Plant Food - Feeds Up to 6 Months - 8 lb

YaraLiva CALCINIT Calcium Nitrate 15.5-0-0 50 lb bag

YaraLiva CALCINIT
15.5-0-0 Calcium Nitrate Fertilizer - 19% Calcium, Water-Soluble - 50 lb Bag

Grow More Orchid Food Bloom Formula 6-30-30, 10 oz jar

Grow More Orchid Food Bloom Formula 6-30-30, 1.25 lb jar

Grow More Premium Orchid Food Bloom Formula
6-30-30 - Water-Soluble Bloom Booster for Orchids (10 oz–1.25 lb)

Mr. B's Green Trees Organic Growth 7-4-4 8 lb pail

Mr. B's Green Trees Organic Growth
7-4-4 Fertilizer - Seabird and Bat Guano Blend for Vegetative Growth - 8 lb

Mr. B's Green Trees

Cyco Commercial Series Bloom 750 g container

Cyco Commercial Series Bloom
8-6-11 - One-Part Dry Soluble Bloom Nutrient - 750 g

Xtreme Gardening Mykos WP wettable powder 12 oz pouch

Xtreme Gardening Mykos WP Mycorrhizal Inoculant - Wettable Powder for Seeds, Clones and Hydroponics - 12 oz

Xtreme Gardening

Hydroponic Research Veg+Bloom +LIFE probiotic additive 100 g

Hydroponic Research Veg+Bloom +LIFE Powdered Probiotic Additive - Plant and Root Development - 100 g

Hydroponic Research

Mad Farmer M.O.A.B. Mother of All Blooms 250 g

Mad Farmer M.O.A.B. Mother of All Blooms
0-52-32 - Bloom Booster Powder - 250 g

Gaia Green Organics Greensand 0-0-0.2 1.5 kg pail

Gaia Green Organics Greensand
0-0-0.2 - Natural Mineral Soil Amendment for Gardens and Lawns - 1.5 kg

Pacific Pearl Oyster Shell Flour 50 lb bag

Pacific Pearl Oyster Shell Flour - Natural Calcium Carbonate Soil Amendment to Raise Soil pH - 50 lb

Greenstone Kraken Kelp 0-0-35 soluble seaweed extract powder

GreenStone Kraken Kelp
0-0-35 - 100% Soluble Seaweed Extract Powder - 1 lb and 2.5 lb (1 lb–2.5 lb)

$72.00–$144.00

Jack's Nutrients 15-0-0 Boost Cal Nit Part B 25 lb bag

Jack's Nutrients
15-0-0 Boost Cal Nit Part B - Calcium Nitrate Water-Soluble Fertilizer - 25 lb

Jack's Nutrients

Xtreme Gardening Mykos 1 lb

Xtreme Gardening Mykos Granular Mycorrhizal Inoculant - Root Stimulator for Transplanting - 1 lb

Xtreme Gardening

Haifa Mag magnesium nitrate fertilizer bag

Haifa Magnisal Magnesium Nitrate
10.8-0-0 - Water-Soluble Magnesium and Nitrate Nitrogen Fertilizer - 50 lb Bag

Greenstone Kosmic Koma bloom booster pail

Greenstone Kosmic Koma
1-46-32 - Late Bloom Booster Nutrient Supplement - 5 lb and 10 lb (5 lb–10 lb)

$96.63–$180.95

Mr. B's Green Trees All Purpose Boost 8-8-8 Fertilizer 8 lb

Mr. B's Green Trees All Purpose Boost
8-8-8 Fertilizer - Hybrid Granular Plant Food - 8 lb

Mr. B's Green Trees

Jack's Nutrients 5-12-26 Part A Hydroponic Fertilizer 25 lb bag

Jack's Nutrients
5-12-26 Part A Hydroponic Fertilizer - Water-Soluble Base Nutrient - 25 lb

Jack's Nutrients

Roots Organics Terp Tea Bloom 3-7-4 Dry Fertilizer, 9 lb Bag

Roots Organics Terp Tea Bloom
3-7-4 Dry Fertilizer - 9 lb

GreenGro Nature's Pride Bloom 10 lb bag

GreenGro Pride Lands Bloom (Nature's Pride Bloom) Dry Fertilizer
2-5.5-5.5 - 10 lb

GreenGro Biologicals

Roots Organics Terp Tea Bloom 3 lb pouch

Roots Organics Terp Tea Bloom
3-7-4 Dry Natural Bloom Fertilizer - 3 lb

Lilly Miller All Purpose Planting and Growing Food 10-10-10 16 lb

Lilly Miller All Purpose Planting and Growing Food
10-10-10 - Granular Plant Food for Shrubs, Vegetables and Flowers - 16 lb

Monterey Epsom Salts Magnesium Sulfate - OMRI Listed Magnesium and Sulfur Plant Supplement - 4 lb

Monterey Epsom Salts Magnesium Sulfate - OMRI Listed Magnesium and Sulfur Plant Supplement - 4 lb

YaraMila 15-15-15 NPK prilled fertilizer 50 lb bag

YaraMila
15-15-15 Balanced NPK Prilled Fertilizer with Sulfur - Chloride-Free Granular Plant Food - 50 lb Bag

Haifa BitterMag Magnesium Sulfate 50 lb bag

Haifa BitterMag Magnesium Sulfate Heptahydrate - Horticultural-Grade Epsom Salt (9.8% Mg) - 50 lb Bag

Haifa MKP Mono Potassium Phosphate 0-52-34 55 lb bag

Haifa MKP Mono Potassium Phosphate
0-52-34 - Water-Soluble Phosphorus and Potassium Fertilizer - 55 lb (25 kg) Bag

Haifa SOP Sulfate of Potash 0-0-51 55 lb bag

Haifa SOP Sulfate of Potash
0-0-51 - Water-Soluble Greenhouse-Grade Potassium Sulfate Fertilizer - 55 lb (25 kg) Bag

Sold Out

Osmocote Flower & Vegetable 14-14-14 smart-release plant food, 8 lb bag

Osmocote Flower & Vegetable
14-14-14 Smart-Release Plant Food - Feeds Up to 4 Months - 8 lb

Sold Out

Grow More Mendocino All Purpose 20-20-20 fertilizer, 25 lb bag

Grow More Mendocino Producer's Choice All Purpose
20-20-20 - Water-Soluble Fertilizer - 25 lb Bag

Grow More Soluble 6-30-30 fertilizer, 25 lb bag

Grow More Soluble
6-30-30 - 100% Water-Soluble Bloom Fertilizer Concentrate - 25 lb Bag

Grow More Orchid Food Maintenance 20-20-20, 10 oz jar

Grow More Premium Orchid Food Maintenance
20-20-20 - Water-Soluble Balanced Orchid Fertilizer - 10 oz

Grow More Orchid Food Growth Formula 30-10-10, 10 oz jar

Grow More Orchid Food Growth Formula 30-10-10, 15 oz jar

Grow More Premium Orchid Food Growth Formula
30-10-10 - Water-Soluble High-Nitrogen Orchid Fertilizer (10 oz–15 oz)

Grow More Orchid Food Urea-Free 20-10-20, 10 oz and 1.25 lb

Grow More Orchid Food Urea Free 20-10-20, 10 oz jar

Grow More Orchid Food Urea-Free
20-10-20 - Powder Fertilizer for Orchid Roots and Blooms - 10 oz and 1.25 lb (10 oz–1.25#)

Sold Out

Fox Farm Happy Frog Tomato & Vegetable Fertilizer

FoxFarm Happy Frog Tomato and Vegetable Dry Fertilizer
5-7-3 - 4 lb

Fox Farm Cha Ching - 1 lb

Fox Farm Cha Ching - 2 lb

FoxFarm Cha Ching
9-50-10 - Late Bloom Soluble Fertilizer - 1 lb, 2 lb and 15 lb (1 lb–15 lb)

$31.95–$151.95

Fox Farm Beastie Bloomz - 1 lb

Fox Farm Beastie Bloomz - 2 lb

FoxFarm Beastie Bloomz
0-50-30 - Mid to Late Bloom Soluble Fertilizer - 1 lb, 2 lb and 15 lb (1 lb–15 lb)

$30.95–$192.95

Fox Farm Open Sesame 1lb

Fox Farm Open Sesame 2lb

FoxFarm Open Sesame
5-45-19 - Early Bloom Soluble Fertilizer - 6 oz, 1 lb, 2 lb and 15 lb (1lb–6oz)

$19.94–$190.95

Powder & Granular Fertilizers