10 Best fertilizer for indoor plants in Canada

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Last Updated - 2025/09/20

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

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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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9.7

Exceptional

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Value for Money

02
Miracle-Gro

MG Succulent Plant Food, 236ml
Main highlights

PROMOTES HEALTHY PLANTS: Helps succulents, cactus, jade and aloe thrive.
NO MESS: Comes in an easy-to-use pump bottle.
MADE FOR SUCCULENT HOUSEPLANTS: Use on cacti, jade, aloe, and other succulents once a week
FEEDS INSTANTLY: Starts working right away.
FAST & EASY FEEDING: Pump directly onto soil or mix with water.
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9.6

Exceptional

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03
Miracle-Gro

Miracle-Gro Indoor Plant Food - 236ml

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9.7 Taste

9.3 Simple to use

8.9 Aroma
Main highlights

QUICK RESULTS: Feeds instantly, to provide beautiful, long-lasting results
MADE FOR INDOORS: Our specialized plant food is great for all types of indoor houseplants, including edibles, cacti and succulents
LONG-LASTING: One bottle can feed 3 small houseplants for up to 5 months, or 2 large plants for 4 months.
HEALTHIER HOUSEPLANTS: Nourishes houseplants to help them grow stronger and more vibrant, compared to unfed plants
EASY-TO-USE: Depending on plant size, simply pump once or twice directly to soil or mix in a watering can to feed many houseplants
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9.5

Excellent

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04
Miracle-Gro

Miracle-Gro Indoor Plant Food Spikes Tray, 24 Spikes

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9.5 Simple to use

8.9 worth the money
Main highlights

GRO SAFELY : Safe to feed all your indoor plants, including ficus, snake plant, croton, spider plants, and pothos
GRO MORE: Contains 24 pre-measured spikes which can feed up to 12 houseplants
GRO LONGER: Our slow-release plant food feeds for up to 2 months, meaning you can spend more time enjoying your houseplants
GRO EASILY: Simply stick one spike into the moist soil at the base of your plant, then sit back and enjoy your happy houseplants.
GRO BEAUTIFUL: Our All-Purpose spikes nourish plants for lush foliage and beautiful blooms, compared to unfed plants
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9.4

Excellent

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05
SCHULTZ

Schultz All Purpose Liquid Plant Food 10-15-10, 4 oz (1 Count)

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9.9 worth the money

9.9 Simple to use
Main highlights

Highest analysis, 10-15-10, of all major-brand liquids
Famous "7 Drops" formula with micronutrients
5.5 oz
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9.3

Excellent

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06
Miracle-Gro

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

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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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9.2

Excellent

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07
Miracle-Gro

Miracle-Gro Liquid All Purpose Plant Food - 950ml

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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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8.9

Very Good

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08
SCHULTZ

Schultz All Purpose 10-15-10 Plant Food Plus, 8-Ounce

14% Off Free Shipping
Main highlights

Just 7 drops of water every time you water
For all Indoor and Outdoor Plants
Encourages new growth
10-15-10 Formula
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8.8

Very Good

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09
Miracle-Gro

Miracle-Gro Water Soluble Plant Food 20-20-20 Green

20% Off Free Shipping

9.9 Simple to use

9.5 worth the money

8.9 Aroma
Main highlights

SPECIALLY FORMULATED: With our strong, balanced NPK, you can expect faster green-up, great foliage growth and stronger roots.
QUICK RESULTS: Feeds instantly to provide quick, beautiful results
FEEDS EVERYTHING: Feeds all flowers, vegetables, trees, shrubs, houseplants and roses; both inground and in containers.
EASY-TO-USE: Simply mix with water and pour around the base of the plant every 7-14 days
DOUBLE-ACTION FEEDING: Feeds through both the roots and the leaves.
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8.6

Very Good

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10
Miracle-Gro

Miracle-Gro Indoor Plant Food, 48-Spikes

Free Shipping
Main highlights

Safe for all houseplants when used as directed
Perfect for continuous feeding of houseplants
Feeds for up to 2 months
Feeds all flowering and foliage houseplants
Contains micronutrients specially formulated for houseplants
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8.3

Good

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