10 Best npk fertilizer for marijuanas in Canada

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Last Updated - 2026/04/04

Best Choice

01
Gaia Green

GAIA GREEN All Purpose ORGANIC FERTILIZER 4-4-4 10kg

9.7 Simple to use

9.1 worth the money
Main highlights

Our unique mix is alive with beneficial soil microbes and mycorrhizal fungi that dramatically expand root development enabling plants to feed more aggressively
10 KILOGRAM BAGS, NOT 20. NPK: 4-4-4
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9.9

Exceptional

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Value for Money

02
Reefertilizer

Reefertilizer Grow - NPK + Micronutrients Veg Stage Fertilizer for Indoor & Outdoor Plants - 1.1 lb Powder Plant Food for Soil Coco DWC Hydroponics - Fast Dissolving Nutrients - 2 Pack
Main highlights

WORKS IN ANY GROWING SYSTEM: Feed plants in soil, coco coir, DWC, and hydroponic systems with one simple nutrient solution. The powder dissolves quickly so roots can absorb nutrients without delay.
VIBRANT GREEN LEAVES: Magnesium and essential trace minerals help plants produce rich color and active leaf growth. Your plants stay healthy, lush, and productive during the vegetative stage.
STRONGER VEGETATIVE GROWTH: Give your plants the nutrients they need to grow dense leaves and sturdy stems. A balanced NPK blend with micronutrients supports fast vegetative development and healthy green growth.
QUICK MIX EASY FEEDING: Mix the powder with water and follow the simple feeding guide. Chelated micronutrients improve nutrient availability so your plants absorb what they need for steady growth.
LESS WASTE MORE VALUE: The concentrated powder formula uses up to 90 percent less plastic than liquid nutrients. You store more fertilizer in less space and avoid paying for water in pre mixed solutions.
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9.8

Exceptional

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03
Nutrila

Nutrila 26‑8‑16 Water‑Soluble Fertilizer with 6 Essential Micronutrients – Balanced Plant Food for Vegetables, Flowers, Lawns & Indoor Plants (2.2 lb / 1 kg)

8.0 worth the money

8.0 Simple to use
Main highlights

Great Coverage – 2.2 lb / 1 kg Size Ample supply for larger planting beds, multiple pots, or lawn patches. One bag covers a wide area—better value per square foot.
Easy Feeding Schedule Use every 7–14 days during active growth periods. Light but frequent feeding helps maintain steady growth and prevents over‑feeding.
Balanced 26‑8‑16 NPK with Micronutrient Boost High nitrogen for lush foliage, phosphorus for root and flower development, potassium for stress resistance + Iron, Zinc, Manganese, Copper, Boron & Molybdenum for vibrant color and health.
Versatile Use for All Plant Types Perfect for outdoor garden vegetables, flowering plants, lawns, shrubs, and indoor houseplants — ideal for both soil and container planting.
Quick‑Acting, Water‑Soluble Formula Mixes easily and feeds plants fast. Nutrients ready for uptake through roots or leaves, showing visible growth in all types of weather.
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9.7

Exceptional

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04
Nutrila

Nutrila 26‑8‑16 Water‑Soluble Fertilizer with 6 Essential Micronutrients – Balanced Plant Food for Vegetables, Flowers, Lawns & Indoor Plants (2.2 lb / 1 kg)

8.0 worth the money

8.0 Simple to use
Main highlights

Great Coverage – 2.2 lb / 1 kg Size Ample supply for larger planting beds, multiple pots, or lawn patches. One bag covers a wide area—better value per square foot.
Easy Feeding Schedule Use every 7–14 days during active growth periods. Light but frequent feeding helps maintain steady growth and prevents over‑feeding.
Balanced 26‑8‑16 NPK with Micronutrient Boost High nitrogen for lush foliage, phosphorus for root and flower development, potassium for stress resistance + Iron, Zinc, Manganese, Copper, Boron & Molybdenum for vibrant color and health.
Versatile Use for All Plant Types Perfect for outdoor garden vegetables, flowering plants, lawns, shrubs, and indoor houseplants — ideal for both soil and container planting.
Quick‑Acting, Water‑Soluble Formula Mixes easily and feeds plants fast. Nutrients ready for uptake through roots or leaves, showing visible growth in all types of weather.
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9.6

Exceptional

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05
Reefertilizer

Reefertilizer Grow | NPK + Micronutrients for Veg Stage Indoor and Outdoor Plants | 1.1lbs Powder Fertilizer Vegetative Nutrients for Soil, Coco, DWC, Hydroponics
Main highlights

Proudly Made in Canada: Trust in the quality and craftsmanship of Reefertilizer Grow fertilizer, meticulously produced in Canada to deliver superior results for your plants.
Powerhouse Formula: Our Reefertilizer Grow fertilizer provides essential micro-nutrients, nitrogen, phosphate, and potassium for strong, healthy, and vibrant growth.
Planet-Friendly Cultivation: Choose Reefertilizer Grow fertilizer for a greener gardening approach. Our sustainable formula promotes environmentally conscious cultivation, helping you reduce your carbon footprint while nurturing your plants with care.
Nitrogen Nitrate Superiority: Leave cheap urea fertilizers in the past. Opt for Reefertilizer Grow fertilizer enriched with nitrogen nitrate, ensuring superior nutrient absorption and enhanced plant growth.
Less Waste, More Fertilizer: Our powder fertilizer reduces waste and uses 90% less plastic, saving you money by eliminating the need to pay for water.
Immediate Nutrient Availability: Thanks to chelation, our fertilizer delivers nutrients tailored to your plants' needs, ensuring rapid absorption and utilization.
Ideal Nutrient Balance: Perfect proportions of nitrogen and potassium fuel robust growth, while vital micro-nutrients like magnesium support overall plant development.
Expert Guidance: Our comprehensive guides provide step-by-step instructions for successful growth. With our dedicated customer support, you're never alone on your gardening journey.
Effortless Application: Simply follow the recommended feeding schedule for easy and effective use of our fertilizer. Dissolves into water quickly.
Cultivate Thriving Greens: Watch in awe as your plants flourish, nourished by nutrients designed to optimize their growth.
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9.4

Excellent

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06
Reefertilizer

Reefertilizer Grow | NPK + Micronutrients for Veg Stage Indoor and Outdoor Plants | 1.1lbs Powder Fertilizer Vegetative Nutrients for Soil, Coco, DWC, Hydroponics
Main highlights

Proudly Made in Canada: Trust in the quality and craftsmanship of Reefertilizer Grow fertilizer, meticulously produced in Canada to deliver superior results for your plants.
Powerhouse Formula: Our Reefertilizer Grow fertilizer provides essential micro-nutrients, nitrogen, phosphate, and potassium for strong, healthy, and vibrant growth.
Planet-Friendly Cultivation: Choose Reefertilizer Grow fertilizer for a greener gardening approach. Our sustainable formula promotes environmentally conscious cultivation, helping you reduce your carbon footprint while nurturing your plants with care.
Nitrogen Nitrate Superiority: Leave cheap urea fertilizers in the past. Opt for Reefertilizer Grow fertilizer enriched with nitrogen nitrate, ensuring superior nutrient absorption and enhanced plant growth.
Less Waste, More Fertilizer: Our powder fertilizer reduces waste and uses 90% less plastic, saving you money by eliminating the need to pay for water.
Immediate Nutrient Availability: Thanks to chelation, our fertilizer delivers nutrients tailored to your plants' needs, ensuring rapid absorption and utilization.
Ideal Nutrient Balance: Perfect proportions of nitrogen and potassium fuel robust growth, while vital micro-nutrients like magnesium support overall plant development.
Expert Guidance: Our comprehensive guides provide step-by-step instructions for successful growth. With our dedicated customer support, you're never alone on your gardening journey.
Effortless Application: Simply follow the recommended feeding schedule for easy and effective use of our fertilizer. Dissolves into water quickly.
Cultivate Thriving Greens: Watch in awe as your plants flourish, nourished by nutrients designed to optimize their growth.
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9.2

Excellent

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07
MARPHYL

MARPHYL All-Purpose Plant Food – Organic Nutrient-Rich Fertilizer & Soil Enhancer for Indoor & Outdoor Flowers, Vegetables, Succulents, Bamboo & Hydroponics

25% Off

9.7 Simple to use

9.1 worth the money

8.7 Fashion
Main highlights

Suitable for indoor plants, garden flowers, vegetables, succulents, bamboo, and hydroponic systems.
Provides balanced macro and micronutrients for healthy plant growth.
Organic and environmentally safe formula for all-season plant feeding.
Improves soil quality and promotes strong roots, vibrant foliage, and abundant blooms.
Easy-to-use liquid fertilizer for container plants, raised beds, and outdoor gardens.
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9.1

Excellent

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08
MARPHYL

MARPHYL All-Purpose Plant Food – Organic Nutrient-Rich Fertilizer & Soil Enhancer for Indoor & Outdoor Flowers, Vegetables, Succulents, Bamboo & Hydroponics

33% Off

9.7 Simple to use

9.1 worth the money

8.7 Fashion
Main highlights

Suitable for indoor plants, garden flowers, vegetables, succulents, bamboo, and hydroponic systems.
Provides balanced macro and micronutrients for healthy plant growth.
Organic and environmentally safe formula for all-season plant feeding.
Improves soil quality and promotes strong roots, vibrant foliage, and abundant blooms.
Easy-to-use liquid fertilizer for container plants, raised beds, and outdoor gardens.
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9.0

Excellent

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09
Gaia Green

Gaia Green Organic 4-4-4 All Purpose Fertilizer 2kg

40% Off

9.3 Simple to use

8.7 worth the money

8.0 Aroma
Main highlights

Rich in nitrogen available
High quality materials
High demand
Environmentally friendly, low impact, slowly available last nutrients for the whole season. High flow of organic matter from soil and plants to build a strong root system and improve microbial activity. A blend of organic and natural ingredients from a variety of sources ensures balanced nutrition for your plants.
Beneficial bacteria and enzymes
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8.8

Very Good

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10
Jobe's Organics

Jobe’s Organics All Purpose Granular Fertilizer, 1.5 Pound Bag

25% Off

9.1 Simple to use

8.2 worth the money

8.0 Aroma
Main highlights

analysis: (4-4-4)
Resealable 1. 5 lb bag
People, pet and
Fast acting, all natural fertilizer for flowers, fruit, vegetables, shrubs, trees & plants
All natural; no added chemicals
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8.7

Very Good

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