10 Best flower fertilisers in Canada

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Last Updated - 2025/07/02

Best Choice

01
MARPHYL

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

Free Shipping

9.7 Simple to use

9.1 worth the money

8.7 Fashion
Main highlights

Superior Liquid Plant Food - MARPHYL Marine Phytoplankton is ideal as an outdoor and indoor plant fertilizer. It works great as vegetable fertilizer, houseplant fertilizer, and garden fertilizer. It’s an organic solution for your garden, greenhouse, and hydroponics. Enjoy gorgeous, colorful blooms with this exceptional flower food. Enhance soil quality and watch your trees, shrubs, vines, grass, plants, flowers, and vegetables thrive
Organic & Sustainable - Our Liquid Marine Phytoplankton Soil Enhancer is an organic, all-purpose plant food that is harvested 100% naturally. It's vegan, non-toxic, non-GMO & sustainably made with no preservatives making it safe for vegetable gardening, groundwater, and pets. This indoor plant food replenishes your soil on a regular basis to ensure the continued growth and beauty of your vegetation. Our organic plant fertilizer will meet your every need and provide a safe environment for all.
Naturally Boost Plant Health - Marine Phytoplankton are Microalgae full of nutrients, vitamins, and minerals. It's so much more than your average liquid plant fertilizer. MARPHYL's fertilizer for indoor and outdoor plants, lawns, trees, flowers etc. provides an astounding array of nutritional elements.Our soil fertilizer is packed with vitamins, minerals, essential fatty acids, DHA, EPA, amino acids, chlorophyll, and a vast spectrum of phytochemicals, to make your garden and greenhouses flourish
Miraculous & Beneficial - Found in oceans across the world, marine phytoplankton are microalgae that infuse your plants, trees, grasses, and more with everything they need for health and longevity. Our plant food is high in potassium, nitrogen, and phosphorus as well as calcium and magnesium for lush foliage. Your lawn & garden will be the envy of the neighborhood, and your indoor plants will brighten your home.
Easy to Use Water Soluble Fertilizer - Simply mix a 1:20 ratio of our liquid plant fertilizer with water. Once in the water, stir, and then pour onto the plants. Soil feed is perfect for use in small and large sprayers. Recommended use is every two weeks. You'll see the difference after just one application
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9.8

Exceptional

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02

Jobe's Organics

Jobe's 5001T Houseplant Indoor Fertilizer Food Spikes, 3x50 Spikes, 3 multipack by fbld_interface

9.7

Exceptional
03
Miracle-Gro

Miracle-Gro Shake N Feed Ultra Bloom Plant Food 10-18-9 2.04 Kg

14% Off Free Shipping
Main highlights

GRO TOGETHER: To boost your results, follow up with a feeding of Miracle Gro Water Soluble Plant food every 7-14 days
GRO LONGER: Our slow-release plant food feeds for up to 3 months, meaning you can spend more time enjoying your flowers
GRO HEALTHIER: Organic ingredients like kelp and bone meal, naturally broken down into nutrients plants can use to develop strong roots
GRO EASIER: Simply shake around your annuals, perennials or roses in ground or in containers
GRO BIGGER: Our high-phosphorous mix feeds above and below the soil for spectacular, more vibrant blooms, compared to unfed plants
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9.6

Exceptional

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04
Miracle-Gro

Miracle-Gro Water Soluble All Purpose Plant Food - 1.5kg

16% Off Free Shipping

9.7 Simple to use

9.5 worth the money

8.9 Aroma
Main highlights

Safe for all plants and is guaranteed not to burn when used as directed
Mixes easily with water
Great on flowers, veggies, trees, and shrubs – roses and houseplants, too
Feeds instantly for big, beautiful Miracle-Gro results
1.5 kg feeds approximately 1,320 ft2 of garden area
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9.5

Excellent

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Value for Money

05
Miracle-Gro

Miracle-Gro Water Soluble Bloom Booster Plant Food - 500g

17% Off Free Shipping

9.9 Simple to use

9.5 worth the money
Main highlights

GRO QUICKER- Feeds instantly, meaning you expect to see beautiful results quicker
GRO EASILY- Simply mix with water and pour around the base of all of your annuals and perennials to grow bigger more beautiful plants
GRO BIGGER- Our high-phosphorous mix promotes more blooms for greater color compared to unfed plants
GRO BETTER- For best results, feed all types of annual and perennial flowers every 7-14 days
GRO ANYWHERE- Use this plant food for in-ground, window boxes and container plants, both indoors and out.
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9.3

Excellent

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06
Osmocote

Osmocote Smart Release Fruit & Veg Plant Food 453 g

Free Shipping
Main highlights

Use anywhere–in ground and in containers
High-nutrient plant food promotes strong roots and vigorous above-ground growth
Feeds continuously for up to 4 months
Favoured for seasonal vegetables and perennials
453 g (1 lb) bottle covers up to 3.7 m2 (40 ft2)
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9.1

Excellent

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07
Miracle-Gro

Miracle-Gro Liquid All Purpose Plant Food - 950ml

18% Off Free Shipping
Main highlights

Use in the garden and on indoor houseplants
Get big, beautiful Miracle-Gro results
Feeds all types of plants – instantly
Concentrated formula mixes easily with water
950 mL (32 oz) feeds 60 m2 (645 ft2)
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8.8

Very Good

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08
Hintyne

Lotus Foods Aquatic Plant Fertilizer, 200g Aquarium Plant Fertilizer, Effective Growth Lotus Foods, Lotus Nutrients for Bowl Lotus, Water Lily, Lotus
Main highlights

Versatile and Easy to Use: Suitable for various aquatic plants, including demanding species like lotus and water lilies. Encourages lushes foliage and vibrant blooms with a simple application formula.
Tailored for Water Lilies: Made with high-purity materials, the popping powder formula is easily absorbed by water lilies and lotus plants, ensuring rapid recycling and enhanced vibrancy.
Rich Nutrient Formula: Contains trace elements, nitrogen, phosphorus, potassium, root substances, and mycelium protein, delivering a balanced diet for healthy aquatic plant development.
Promotes Strong Roots: Enhances root nutrition to improve resilience and vitality. Supports faster and healthier growth, ensuring lushes, thriving underwater plant life.
Boosts Bloom Performance: Provides essential nutrients to stimulate bud formation and promote fuller, brighter flowers. Enhances petal shine and fragrance for a visually stunning and fragrant aquatic garden.
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8.7

Very Good

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09
mygarden

myGarden Organic Flowering Plant Fertilizer 500g, Pro-Cert Organic N-P-K 2-8-4 Formula | Boosts Vibrant Blooms & Robust Growth | All-Natural Plant Food for Flowering Plants, Indoor & Outdoor Use

Free Shipping
Main highlights

Versatile Application: Suitable for a variety of flowering plants, including roses, petunias, geraniums, and more. Whether you’re planting in your garden, pots, or raised beds, myGarden Fertilizer supports your plants through every stage of growth
Sustainable Gardening: Support your garden's health while being kind to the planet. Our organic formula ensures that you can grow beautiful flowers while promoting soil vitality and biodiversity.
Organic and Eco-Friendly: Our Pro-Cert certified fertilizer is made from natural ingredients, perfect for environmentally conscious gardeners looking to enhance their plants without harsh chemicals.
Optimal Nutrient Balance: With a rich concentration of phosphorus (8) and potassium (4), myGarden promotes healthy root development and encourages stunning flower production, making it ideal for flowering annuals, perennials, and container plants.
Easy to Use: This 500g re-sealable bag is perfect for home gardeners and plant enthusiasts alike. Simply sprinkle the granules around your plants or mix them into the soil for an instant nutrient boost.
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8.4

Good

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10
Hintyne

Aquarium Plant Fertilizer 200g Aquarium Plant Fertilizer Effective Growth Lotus Nutrients Lotus Foods for Bowl/Water Lily
Main highlights

Versatile and Easy to Use: Suitable for various aquatic plants, including demanding species like lotus and water lilies. Encourages lushes foliage and vibrant blooms with a simple application formula.
Tailored for Water Lilies: Made with high-purity materials, the popping powder formula is easily absorbed by water lilies and lotus plants, ensuring rapid recycling and enhanced vibrancy.
Rich Nutrient Formula: Contains trace elements, nitrogen, phosphorus, potassium, root substances, and mycelium protein, delivering a balanced diet for healthy aquatic plant development.
Promotes Strong Roots: Enhances root nutrition to improve resilience and vitality. Supports faster and healthier growth, ensuring lushes, thriving underwater plant life.
Boosts Bloom Performance: Provides essential nutrients to stimulate bud formation and promote fuller, brighter flowers. Enhances petal shine and fragrance for a visually stunning and fragrant aquatic garden.
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8.3

Good

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