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Best fertilizer for gardenias - April 2026

Last Updated - April 4, 2026

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Miracle-Gro

Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food - Fertilizer for Acid-Loving Plants & Flowers, 5 lb.

Miracle-Gro

$21.99

More Details
Main highlights
- Plant food instantly feeds acid-loving plants, including azaleas, camellias, rhododendrons, gardenias, hibiscus, hollies, hydrangeas, and orchids
- Perfect to use on the indoor plants that decorate your bookshelf or side table, as well as the outdoor plants that live in your garden or planters
- Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food helps acid-loving plants and flowers thrive
- Fertilizer won't harm other plants or burn foliage, when used as directed
- Apply plant food every 7-14 days with a watering can or Miracle-Gro Garden Feeder
$21.99
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Miracle-Gro

Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food - Fertilizer for Acid-Loving Plants & Flowers, 5 lb.

Miracle-Gro

$21.99

More Details
Main highlights
- Plant food instantly feeds acid-loving plants, including azaleas, camellias, rhododendrons, gardenias, hibiscus, hollies, hydrangeas, and orchids
- Perfect to use on the indoor plants that decorate your bookshelf or side table, as well as the outdoor plants that live in your garden or planters
- Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food helps acid-loving plants and flowers thrive
- Fertilizer won't harm other plants or burn foliage, when used as directed
- Apply plant food every 7-14 days with a watering can or Miracle-Gro Garden Feeder
$21.99
3
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HiThrive

16oz Gardenia Fertilizer - Makes 96 Gallons of Indoor Plant Food for Gardenia Plants Live, Nutrient-Rich Outdoor & Indoor Plant Fertilizer, Flower Food for Vibrant Growth and Beautiful Blooms

HiThrive

$12.97

More Details
Main highlights
- POWERFUL FORMULA: Our liquid fertilizer for indoor plants & outdoors is formulated to nourish gardenias with essential macronutrients & micronutrients for fragrant flowers & vibrant color.
- FOR ALL FLOWERING BUSHES: Our gardenia plant fertilizer outdoor & indoors also works as a hydrangea fertilizer, azalea fertilizer, rhododendron fertilizer, camellia fertilizer, jasmine fertilizer & more.
- FIXES NUTRIENT DEFICIENCIES: Reverse yellowing leaves and slow growth with our bloom booster fertilizer, enriched with calcium, magnesium, iron, copper, manganese & zinc for blooming gardenias.
- EASY TO USE: For standard feed rate, simply mix 1 teaspoon (1/2 capful) per gallon of water & apply every watering. For nutrient deficiency feed rate, use 2 teaspoons (1 capful) per gallon of water.
- BOOSTS BLOOM & GROWTH: This gardenia fertilizer outdoor & indoors is packed with nitrogen for new leaves & faster plant growth, potassium for stress resilience & phosphorus to support flowering.
- 2X MORE VALUE: With a bigger-sized bottle, 16 oz of our Gardenia Fertilizer for gardenias & other flowering bushes makes 96 gallons of flower fertilizer while the 32 oz bottle makes 192 gallons.
$12.97
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

HiThrive

16oz Gardenia Fertilizer - Makes 96 Gallons of Indoor Plant Food for Gardenia Plants Live, Nutrient-Rich Outdoor & Indoor Plant Fertilizer, Flower Food for Vibrant Growth and Beautiful Blooms

HiThrive

$12.97

More Details
Main highlights
- POWERFUL FORMULA: Our liquid fertilizer for indoor plants & outdoors is formulated to nourish gardenias with essential macronutrients & micronutrients for fragrant flowers & vibrant color.
- FOR ALL FLOWERING BUSHES: Our gardenia plant fertilizer outdoor & indoors also works as a hydrangea fertilizer, azalea fertilizer, rhododendron fertilizer, camellia fertilizer, jasmine fertilizer & more.
- FIXES NUTRIENT DEFICIENCIES: Reverse yellowing leaves and slow growth with our bloom booster fertilizer, enriched with calcium, magnesium, iron, copper, manganese & zinc for blooming gardenias.
- EASY TO USE: For standard feed rate, simply mix 1 teaspoon (1/2 capful) per gallon of water & apply every watering. For nutrient deficiency feed rate, use 2 teaspoons (1 capful) per gallon of water.
- BOOSTS BLOOM & GROWTH: This gardenia fertilizer outdoor & indoors is packed with nitrogen for new leaves & faster plant growth, potassium for stress resilience & phosphorus to support flowering.
- 2X MORE VALUE: With a bigger-sized bottle, 16 oz of our Gardenia Fertilizer for gardenias & other flowering bushes makes 96 gallons of flower fertilizer while the 32 oz bottle makes 192 gallons.
$12.97
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

PERFECT PLANTS

Perfect Plants Gardenia Liquid Fertilizer | 8oz. Tailored Bloom Boosting Plant Food | Great for Indoor Outdoor Flowering Plants

PERFECT PLANTS

$15.49

More Details
Main highlights
- VIBRANT GROWTH — Fertilizing Your Gardenia Leads to More Consistent Blooms, AND a Deeper Flower and Foliage Colors
- SPECIALLY FORMULATED — NPK and Application Instructions Are Specific To Flowering Bushes, Potted and in the Landscape
- RESEALABLE BOTTLE— Our Liquid Bloom Boosting Plant Food Will Keep Its Effectiveness for Months
- CONCENTRATED MIX — You Only Have to Apply a Measured Amount to Your Water Before Watering
- BIG PLANTS — Filled With Essential Nutrients that Your Flowering Plant Needs to Grow Big And Strong
$15.49

Best fertilizer for gardenias - April 2026

Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food - Fertilizer for Acid-Loving Plants & Flowers, 5 lb.

Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food - Fertilizer for Acid-Loving Plants & Flowers, 5 lb.

16oz Gardenia Fertilizer - Makes 96 Gallons of Indoor Plant Food for Gardenia Plants Live, Nutrient-Rich Outdoor & Indoor Plant Fertilizer, Flower Food for Vibrant Growth and Beautiful Blooms

16oz Gardenia Fertilizer - Makes 96 Gallons of Indoor Plant Food for Gardenia Plants Live, Nutrient-Rich Outdoor & Indoor Plant Fertilizer, Flower Food for Vibrant Growth and Beautiful Blooms

Perfect Plants Gardenia Liquid Fertilizer | 8oz. Tailored Bloom Boosting Plant Food | Great for Indoor Outdoor Flowering Plants

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32oz Gardenia Fertilizer - Makes 192 Gallons of Indoor Plant Food for Gardenia Plants Live, Nutrient-Rich Outdoor & Indoor Plant Fertilizer, Flower Food for Vibrant Growth and Beautiful Blooms

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