Grow Supplies

Grow Supplies

Everything you need to grow organically and build living soil.
From single-ingredient amendments and organic fertilizer blends to microbial inoculants, compost tea ingredients, seeds, supplies, and tools—you’ll find all the essentials to support healthy, regenerative growing.

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Fermented sugarcane fertilizer 1kg bag, plant-based nitrogen 11-0-5 granular amendment for soil and plant growth in Canada
Close-up of fermented sugarcane fertilizer granules, plant-based nitrogen 11-0-5 showing texture and particle size
Fermented Sugarcane 11-0-5 Fertilizer
from $14.00
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1kg Fish Bone Meal – Organic slow-release fertilizer for flowers, fruits, and root development
2kg Fish Bone Meal – High-phosphorus meal for boosting root growth, blooms, and calcium levels
Fish Bone Meal 6-16-0
from $15.00
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2 kg clear bag of Fish Bone Granules organic fertilizer made from wild fish bones.
Close-up texture of dark, irregular Fish Bone Granules organic fertilizer.
Fish Bone Granules
from $15.00
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Black Soldier Fly Frass Granules 2kg bag – chitin-rich 3-2-2 insect fertilizer for gardens and containers
Close-up of Black Soldier Fly Frass granules texture – natural insect-based fertilizer for soil health
Black Soldier Fly Frass 3-2-2 (Granules)
from $18.00
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1.5kg Optimize Organics Frass – organic fertilizer with slow and quick-release nitrogen for flowers, vegetables, and soil life.
Close-up of Optimize Organics Black Soldier Fly Frass – natural insect-based fertilizer with nitrogen, chitin, and beneficial microbes.
Black Soldier Fly Frass 3-2-2 (Fine Grade)
from $13.00
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1kg Mineralized Phosphate 0-9-0 by Optimize Organics – natural powdered phosphorus and calcium for garden use.
Close-up of Optimize Organics Mineralized Phosphate 0-9-0 – finely ground mineral powder for phosphorus and calcium nutrition.
Mineralized Phosphate 0-9-0
from $14.00
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2kg bag of Oyster Shell Flour by Optimize Organics – slow-release calcium for soil pH balance and strong plant growth.
1kg bag of Optimize Organics Oyster Shell Flour – natural calcium boost for potted plants, leafy greens, and garden beds.
Oyster Shell Flour 36% Ca
from $14.00
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Humic Acid Being Mixed – Fine humic acid powder dissolving in water for easy soil and foliar application
Close-Up of Humic Acid Powder – Rich-colored organic humic powder for boosting soil and plant health
Humic Acid Powder - Soluble
from $17.00
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Optimize Organics' Humic Acid Granules: 64% humic, 3% fulvic acid. Enhances nutrient uptake, boosts yields & improves soil structure & water retention.
2KG Bag of Optimize Organics' Humic Acid Granules: 64% humic, 3% fulvic acid. Enhances nutrient uptake, boosts yields & improves soil structure & water retention.
Humic Acid (Granules)
from $11.00
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Close-Up of Volcanic Basalt Rock Dust – Fine, mineral-rich basalt powder for soil building and healthy plant growth
1kg Volcanic Basalt Rock Dust – Fine rock dust to boost soil health, root growth, and trace mineral availability
Volcanic Rock Dust (Basalt)
from $13.00
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Micronized Soft Rock Phosphate Powder – Fine, water-suspendable Cal-Phos powder for soil and foliar applications
1kg Micronized Soft Rock Phosphate – Fine Cal-Phos powder to support root growth and increase phosphorus availability
Micronized Soft Rock Phosphate (Cal-Phos)
from $21.00
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Close-Up of Glacial Rock Dust – Fine, flour-like texture of mineral-rich powder for soil and compost amendment
1kg Glacial Rock Dust – Fine mineral powder to boost soil health, plant nutrition, and microbial activity
Glacial Rock Dust
from $8.00
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Close-up of Azomite micronized powder – fine volcanic mineral dust packed with trace elements for soil and plant vitality.
1kg Azomite Micronized – fine mineral powder packed with 70+ trace elements to support soil health and plant nutrition
Azomite - Rock Dust
from $11.00
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1kg Granulated Dolomite Lime – Raises soil pH and adds calcium and magnesium for garden, lawn, and soil health
Close-Up of Dolomite Lime Granules – Uniform granules made from finely ground limestone for easy soil application
Dolomite Lime (Granules)
from $10.00
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2KG Bag of Optimize Organics' Limestone Granules: 34% calcium, 88% calcium carbonate. Raises soil pH, boosts nutrient efficiency & improves soil health.
Optimize Organics' Limestone Granules: 34% calcium, 88% calcium carbonate. Raises soil pH, boosts nutrient efficiency & improves soil health.
Limestone (Granules)
from $10.00
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Optimize Organics' Gypsum Granules: 22% calcium, 14% sulfur. Enhances soil structure, water retention & nutrient availability for healthier crops.
1kg Gypsum Granules 22% Calcium soil amendment for improving soil structure, drainage, water retention, and calcium availability in gardens and raised beds.
Gypsum Granules
from $10.00
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Optimize Organics' Rock Phosphate Granular 0-7-0: slow-release phosphorus for root growth, flowering & fruiting. Easy application & organic-certified.
2KG Bag of Optimize Organics' Rock Phosphate Granular 0-7-0: slow-release phosphorus for root growth, flowering & fruiting. Easy application & organic-certified.
Rock Phosphate Granular 0-7-0
from $11.00
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1kg bag of dolomite lime sandy powder for fast-acting soil pH correction – 20% calcium, 10% magnesium, 90% CCE
Close-up image of dolomite lime powder.
Dolomite Lime (Powder)
from $10.00
Currently Unavailable
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Close-Up of Micronized Greensand Powder – Fine glauconite powder packed with potassium, iron, and trace minerals.
1kg Micronized Greensand – Fine mineral powder to improve soil structure and provide slow-release nutrients.
Micronized Greensand
from $16.00
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Optimize Organics' Manganese Sulfate 32%: fast-acting micronutrient to correct deficiencies, enhance photosynthesis & improve stress tolerance.
2KG Bag of Optimize Organics' Manganese Sulfate 32%: fast-acting micronutrient to correct deficiencies, enhance photosynthesis & improve stress tolerance.
Manganese Sulfate 32% (Mn)
from $17.00
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Sul-Po-Mag (Langbeinite) Granules
Sul-Po-Mag (Langbeinite) Granules
from $11.00
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Close-up of Sul-Po-Mag langbeinite crystals – naturally mined potassium, magnesium and sulfur mineral fertilizer
1kg bag of Sul-Po-Mag langbeinite crystals – chloride-free potassium, magnesium and sulfur fertilizer, approved for organic use
Sul-Po-Mag (Langbeinite) Crystals
from $15.00
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Optimize Organics' Elemental Boron 20.5%: water-soluble boron to correct deficiencies, boost flower & fruit development, and support plant health.
1KG Bag of Optimize Organics' Elemental Boron 20.5%: water-soluble boron to correct deficiencies, boost flower & fruit development, and support plant health.
Elemental Boron
from $12.00
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Optimize Organics' Ferrous Sulfate: 20% iron, 12% sulfur. Corrects iron chlorosis, boosts chlorophyll & reduces soil alkalinity for gardens & crops.
2KG Bag of Optimize Organics' Ferrous Sulfate: 20% iron, 12% sulfur. Corrects iron chlorosis, boosts chlorophyll & reduces soil alkalinity for gardens & crops.
Iron - Ferrous Sulfate 20%
from $12.00
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Copper Sulfate 25% (FEED GRADE)
Copper Sulfate 25% (FEED GRADE)
from $19.00
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Close-up of zinc sulfate powder, fine white crystalline texture used as a micronutrient fertilizer for correcting zinc deficiency in plants
Water-soluble zinc sulfate 35.5% (Zn) in a 2kg size. Ideal for garden and crop use as a consistent micronutrient fertilizer.
Zinc Sulfate 35.5% (Zn)
from $14.00
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Optimize Organics' Sulfur Granules 90%: elemental sulfur to lower soil pH, correct alkaline soils & support sulfur-oxidizing bacteria. Organic-certified.
2KG Bag of Optimize Organics' Sulfur Granules 90%: elemental sulfur to lower soil pH, correct alkaline soils & support sulfur-oxidizing bacteria. Organic-certified.
Sulfur Granules 90% (S)
from $12.00
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Optimize Organics' Potassium Sulfate Solution Grade: 52% potash, 18% sulfate. Water-soluble, low-salinity fertilizer for high-potassium crops.
2KG Bag of Optimize Organics' Potassium Sulfate Solution Grade: 52% potash, 18% sulfate. Water-soluble, low-salinity fertilizer for high-potassium crops.
Potassium Sulfate Solution Grade
from $15.00
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Optimize Organics' Magnesium Sulfate: 9.8% magnesium, 13% sulfur. Supports chlorophyll production, nutrient absorption & flower and fruit development.
2KG Bag of Optimize Organics' Magnesium Sulfate: 9.8% magnesium, 13% sulfur. Supports chlorophyll production, nutrient absorption & flower and fruit development.
Magnesium Sulfate (Epsom Salts)
from $11.00
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Close-Up of Gypsum Powder – Fine, highly soluble gypsum powder for fast calcium and sulfur delivery to plants
1kg Gypsum Solution Grade – Water-soluble calcium and sulfur powder to improve soil health and plant nutrition
Gypsum Solution Grade
from $10.00
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Optimize Organics' Potassium Sulfate 0-0-52: 52% potassium, 18% sulfur. Enhances fruit & vegetable growth with low salinity. Organic-certified.
2KG Bag of Optimize Organics' Potassium Sulfate 0-0-52: 52% potassium, 18% sulfur. Enhances fruit & vegetable growth with low salinity. Organic-certified.
Potassium Sulfate 0-0-52
from $14.00
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Macro view of citric acid anhydrous crystals, fine white powder for pH adjustment in hydroponics
Non-GMO citric acid 1kg bag, plant-derived pH down for hydroponics and organic gardening
Citric Acid (Non-GMO)
from $25.00
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2KG Bag of Optimize Organics' Potassium Bicarbonate (Food Grade): pH UP solution that regulates soil acidity, boosts nutrient absorption & enhances plant growth.
Potassium Bicarbonate (Food Grade)
from $12.00
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Barley Seed- Sprout For Enzyme Drench
Barley Seed- Sprout For Enzyme Drench
from $15.00
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Alfalfa Seed - Sprout For Enzyme Drench
Alfalfa Seed - Sprout For Enzyme Drench
$18.00
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Purple Barley Seed - Sprout For Enzyme Drench
Purple Barley Seed - Sprout For Enzyme Drench
from $19.00
Currently Unavailable
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Malted Barley Seed - Pre-Sprouted & Kiln Dried
Malted Barley Seed - Pre-Sprouted & Kiln Dried
$11.00
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Corn Seed - Sprout For Enzyme Drench
Corn Seed - Sprout For Enzyme Drench
from $19.00
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Close-up of screened horticultural pumice—light, airy texture perfect for soil drainage and long-term aeration.
Hand holding pumice stone—porous and lightweight, ideal for mixing into soil to boost airflow and prevent overwatering.
Pumice Stone (3-12mm)
from $12.00
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Coarse Perlite is a natural, sterile soil amendment that improves aeration, drainage, and prevents compaction. Ideal for gardening, propagation, and hydroponics. Neutral pH and organic-compliant in Canada.
Coarse Perlite
Coarse Perlite
from $10.00
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Optimize Organics' Medium Perlite: lightweight volcanic mineral that enhances aeration, drainage & root growth. Ideal for gardening & hydroponics.
Medium Perlite
Medium Perlite
from $10.00
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Close-Up of Coconut Coir Fiber – Fine, springy brown fiber for improving soil structure and root health
4L Coconut Coir Fiber – Sustainable peat moss alternative for moisture retention and healthy root development
Coconut Coir Fiber
from $12.00
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Optimize Organics coconut husk chips are a sustainable soil amendment for aeration, moisture retention, and root health in indoor and outdoor plants.
25L bag of Optimize Organics coconut husk chips are a sustainable soil amendment for aeration, moisture retention, and root health in indoor and outdoor plants.
Coconut Husk Chips
from $13.00
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Optimize Organics mini LECA pebbles are very small porous expanded clay balls that improve aeration, drainage, and root health in hydroponic and soil-based plant systems.
8L bag of Optimize Organics mini LECA pebbles are very small porous expanded clay balls that improve aeration, drainage, and root health in hydroponic and soil-based plant systems.
Mini Leca Pebbles
from $19.00
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Optimize Organics LECA Pebbles are 10-20mm expanded clay balls for improved aeration, drainage, and root health in hydroponic and soil-based plant systems.
8L bag of Optimize Organics LECA Pebbles are 10-20mm expanded clay balls for improved aeration, drainage, and root health in hydroponic and soil-based plant systems.
Leca Pebbles (10–20mm)
from $13.00
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Close-Up of Vermiculite – Puff-textured, expanded mineral flakes for holding moisture and supporting delicate roots
4L Vermiculite – Lightweight, sterile mineral for moisture retention and soil aeration in seed starting and propagation
Vermiculite
from $12.00
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4L Small Chunk Biochar 2–6mm – Boost soil structure and microbial life in gardens, beds, and potting mixes
Small Biochar (2-6mm)
from $13.00
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Close-Up of Large Biochar – Coarse, Porous Carbon Material for Soil Structure and Microbial Support
4L Large Chunk Biochar – 12mm+ Forestry-Sourced Biochar for Aeration, Microbial Habitat, and Compost Charging
Large Biochar (6-25mm)
from $13.00