10 Best Fertilizer For Gardenias of 2026

Last updated on 04/04/2026
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Best Choice
1
9.8
Exceptional
Nelson Acid Loving Plant Food Huge Blooms for Azalea Jasmines Roses Camellias Gardenias NutriStar 9-13-11 (2 lb.)
Nelson Plant Food

Nelson Acid Loving Plant Food Huge Blooms for Azalea Jasmines Roses Camellias Gardenias NutriStar 9-13-11 (2 lb.)

Why we love it
  • Promotes deep, dark green leaves.
  • Immediate results for happy plants.
  • Feed acid-loving plants consistently.
Main Highlights
  • PLANT FOOD: For All Acid loving plants and high pH soils featuring (NPK) Nitrogen (9%), Phosphate (13%), and Soluble Potash K20 (11%). Contains four acidifying sources to lower the soil pH factor to create prosperous growing environment, three sources of nitrogen for green up and to avoid root burn, three sources of Iron (3.2%) to ensure plant health, deep and dark green leaves, Cottonseed (20%) to feed plants slowly and consistently.
  • FERTILIZER FOR ACIDIC SOILS: Excellent source of nutrients and minerals for in-ground and container flowering acid loving plants including, but not limited to: Azalea, Camellias, Gardenias, Magnolias, Dogwoods, Ferns, Red Bud, Jasmines, Hydrangea, Caladiums, Roses, Evergreen Shrubs, Flowering Trees and Evergreens.
  • PLANT FERTILIZER: Helps flowering acid loving plants to improve tolerance to dry weather conditions, in addition to promoting heavy flowering, while increasing the size and strengths of the plants. Apply in the beginning of spring and then every other month during growing season.
  • IMMEDIATE RESULTS: NutriStar works with the soil and the soil biology to provide your plants with the best nutrition at the right time and in the right amount. Your plants get an immediate boost upon application, coupled with lasting benefits that continue to feed.
  • SUPERIOR QUALITY: The leading landscapers' choice for flowers for over 30 years. Nelson Plant Food builds products that are horticulturally correct for each type of plant. Extensive research is done to make sure that plants are fed correctly with each NutriStar or ColorStar product.
9.8
Exceptional
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Best Value
2
9.6
Superb
GARDENWISE 8-4-8 Acidic Fertilizer for Azaleas, Camellias (Camelia), Hydrangeas, Blueberries, Gardenias, Magnolia Trees, Evergreens, and Rhododendrons - Ideal Iron-Rich Plant Food (1 Quart)
GARDENWISE

GARDENWISE 8-4-8 Acidic Fertilizer for Azaleas, Camellias (Camelia), Hydrangeas, Blueberries, Gardenias, Magnolia Trees, Evergreens, and Rhododendrons - Ideal Iron-Rich Plant Food (1 Quart)

Why we love it
  • Vibrant blooms guaranteed.
  • Enhances soil health naturally.
  • Simple application for everyone.
Main Highlights
  • 🌺 VIBRANT BLOOMS & ROBUST GROWTH: Enriched with essential nutrients like magnesium, iron, and manganese, GARDENWISE 8-4-8 is ideal for preventing chlorosis in acid-loving plants. It's perfect for azaleas, camellias (camelia), rhododendrons, hydrangeas, and all acid-loving plants including magnolia trees, evergreens, and blueberries.
  • 🌿 SOIL ACIDIFICATION FOR OPTIMAL GROWTH: This fertilizer acts as an effective soil acidifier. It's crucial for azaleas, hydrangeas, and gardenias, often struggling in neutral or alkaline soils.
  • 🌱 ENHANCES SOIL HEALTH WITH BENEFICIAL MICROBES: Unleash the transformative power of our eco-conscious bio-solid fertilizer, born from the heart of advanced wastewater treatment technology. Rich in live bacterial microbes, this meticulously refined bio-solid emerges through a rigorous process of heating, drying, and prilling, stripping away all toxins and heavy metals to guarantee unmatched safety for your garden. Dive into the essence of nature's best-kept secret and watch as it naturally enriches your soil, igniting a burst of microbial life that promises unparalleled growth and vitality for your plants.
  • 🤲 SIMPLE & STRAIGHTFORWARD APPLICATION: GARDENWISE 8-4-8 Fertilizer makes plant care easy for everyone. Just sprinkle the granules around the base of your plants, gently mix into the soil, and water. This no-fuss, clear method ensures that whether you're a first-time gardener or a seasoned green thumb, nourishing your plants is effortless and effective.
  • 💵 ECONOMICAL LONG-LASTING FORMULA: GARDENWISE 8-4-8 is not only cost-effective but also incredibly efficient, requiring just three feedings per year. Its slow-release granules ensure sustained nutrition and long-lasting benefits, making it an ideal choice for gardeners seeking an economical solution for maintaining their plants' health and vibrancy throughout the year.
  • 🌼 GARDENIA & HYDRANGEA SUPERFOOD: Elevate your garden with our premium fertilizer, the ultimate nourishment for gardenias and hydrangeas. Our formula is a gardener's secret weapon for a plethora of acid-loving plants, including azaleas, camellias, and rhododendrons. Embrace the power of professional-grade care and transform your garden into a vibrant paradise that captivates the senses and ignites passion in every gardener's heart.
  • 🍇 BLUEBERRY & BERRY TONE ENHANCER: Specially formulated to boost berry production, making it an ideal blueberry fertilizer and berry tone enhancer.
9.6
Superb
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3
9.5
Superb
Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food - Fertilizer for Acid-Loving Plants & Flowers, 5 lb.
Miracle-Gro

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

Why we love it
  • Perfect for acid-loving plants.
  • Easy application with watering can.
  • Safe for other plants too.
Main Highlights
  • Miracle-Gro Water Soluble Azalea, Camellia, Rhododendron Plant Food helps acid-loving plants and flowers thrive
  • 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
  • Apply plant food every 7-14 days with a watering can or Miracle-Gro Garden Feeder
  • Fertilizer won't harm other plants or burn foliage, when used as directed
9.5
Superb
Amazon Logo
4
9.4
Superb
Professional Liquid Gardenia Plant Fertilizer | 3-1-2 Concentrate for Flowering Plants | Multi-Purpose Blend & Gardening Supplies | 8 oz Bottle
Leaves and Soul

Professional Liquid Gardenia Plant Fertilizer | 3-1-2 Concentrate for Flowering Plants | Multi-Purpose Blend & Gardening Supplies | 8 oz Bottle

Why we love it
  • Perfect for all succulent types.
  • Easy to mix and apply.
  • Quality guaranteed from USA.
Main Highlights
  • GREAT BLEND OF NUTRIENTS – Formulated with a balanced 3-1-2 nutrient ratio to support healthy succulent growth and maintenance. This liquid concentrate provides essential macronutrients commonly used in plant care routines to help maintain overall plant condition when used as directed. Suitable for regular feeding as part of a consistent watering and fertilizing schedule.
  • MIX WITH WATER – Designed to be diluted with water for easy application during routine watering. Simply mix 1–2 teaspoons per 8 cups of water and apply during every other watering cycle or as needed based on your plant care routine. The liquid format allows for even distribution of nutrients when mixed thoroughly before application.
  • SUITABLE FOR MOST VARIETIES – Appropriate for a wide range of succulent plants, including both young and established varieties. Can be incorporated into regular plant care routines for indoor or outdoor succulents. Always follow proper dilution instructions and adjust frequency based on plant type, growing conditions, and seasonal needs.
  • SPECIALLY FORMULATED BLEND – Carefully developed liquid formula intended to support nutrient availability when used as part of a balanced plant care plan. The concentrate mixes easily with water and is designed for consistent application to help maintain plant health throughout active growing periods. Use according to label directions for best results.
  • DURABLE PACKAGING – Packaged in a sealed 8 oz bottle designed for convenient storage and repeated use. The secure cap helps prevent leaks when properly closed. Store in a cool, dry place away from direct sunlight and follow label instructions for safe handling and long-term storage.
  • MADE IN THE USA – Manufactured and packaged in the United States. Produced in compliance with applicable manufacturing standards. Please review product labeling for usage instructions, storage guidance, and additional product details before application.
  • LEAVES AND SOUL APP – Brand-associated mobile application offering educational content related to plant and bonsai care. Provides informational resources designed to support general plant maintenance practices. App availability and features may vary.
9.4
Superb
Amazon Logo
5
9.2
Superb
Perfect Plants Gardenia Liquid Fertilizer | 8oz. Tailored Bloom Boosting Plant Food | Great for Indoor Outdoor Flowering Plants
PERFECT PLANTS

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

Why we love it
  • Vibrant blooms enhance garden beauty.
  • Nutrient-rich for strong growth.
  • Easy application for convenience.
Main Highlights
  • VIBRANT GROWTH — Fertilizing Your Gardenia Leads to More Consistent Blooms, AND a Deeper Flower and Foliage Colors
  • BIG PLANTS — Filled With Essential Nutrients that Your Flowering Plant Needs to Grow Big And Strong
  • SPECIALLY FORMULATED — NPK and Application Instructions Are Specific To Flowering Bushes, Potted and in the Landscape
  • CONCENTRATED MIX — You Only Have to Apply a Measured Amount to Your Water Before Watering
  • RESEALABLE BOTTLE— Our Liquid Bloom Boosting Plant Food Will Keep Its Effectiveness for Months
9.2
Superb
Amazon Logo
6
9.1
Superb
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
HiThrive

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

Why we love it
  • More value for your money.
  • Promotes vibrant blooms quickly.
  • Easy application for all plants.
Main Highlights
  • 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.
  • 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.
  • POWERFUL FORMULA: Our liquid fertilizer for indoor plants & outdoors is formulated to nourish gardenias with essential macronutrients & micronutrients for fragrant flowers & vibrant color.
  • 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.
  • 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.
  • 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.
9.1
Superb
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7
8.9
Excellent
SouthernGRO Azaleas, Camellia, Gardenia Fertilizer 04-08-08 – 4lb Bag for Healthier Plants, Greener Foliage, Deep Root Growth – Premium Quality Lawn, Garden, Food Plot Nutrition Booster
SouthernGRO

SouthernGRO Azaleas, Camellia, Gardenia Fertilizer 04-08-08 – 4lb Bag for Healthier Plants, Greener Foliage, Deep Root Growth – Premium Quality Lawn, Garden, Food Plot Nutrition Booster

Why we love it
  • Optimized growth for vibrant plants.
  • Versatile for various plant types.
  • Easy application for all gardeners.
Main Highlights
  • Enhanced Nutrient Formula: SouthernGRO Azaleas/Camelia/Gardenia Fertilizer 04-08-08 offers a unique blend of nutrients specifically designed to optimize growth and health in your plants, ensuring greener foliage and deep roots.
  • Ideal Composition: The 4lb. bag of fertilizer provides a well-balanced 04-08-08 formula, great for replenishing essential nutrients and promoting overall plant health. Achieve impressive results in your lawn, garden, or food plot.
  • Versatile Application: SouthernGRO's high-quality fertilizer is suitable for a variety of plants, including Azaleas, Camelias, Gardenias, and Evergreens. Experience the benefits of a healthier, more vibrant garden with this specialized blend.
  • Easy To Use: Simply apply Azaleas/Camelia/Gardenia Fertilizer 04-08-08 to your plants' root systems for optimal results. The 4lb. bag ensures a convenient and efficient application for gardeners of all skill levels.
  • Trusted Brand: SouthernGRO is committed to providing premium fertilizers that deliver outstanding results. Enhance the vitality and appearance of your plants with this expertly crafted, nutrient-rich formula.
8.9
Excellent
Amazon Logo
8
8.7
Excellent
4-8-8 Azalea, Camellia, Gardenia & Evergreen Fertilizer - Made in USA - NPK + Micronutrients Plant Food for Indoor/Outdoor Plants & Flower Gardens
Cz Garden Supply

4-8-8 Azalea, Camellia, Gardenia & Evergreen Fertilizer - Made in USA - NPK + Micronutrients Plant Food for Indoor/Outdoor Plants & Flower Gardens

Why we love it
  • Premium quality ingredients enhance growth.
  • Powerful formula boosts garden blooms.
  • Slow release eliminates fertilizer burn.
Main Highlights
  • PREMIUM QUALITY INGREDIENTS – Cz Garden 4-8-8 is fertilizer for Azalea, Camellia, Gardenia & Evergreens, Rhododendrons, etc.
  • RESEALABLE, EASY POUR PACKAGING: Cz Garden 4-8-8 Azalea, Camellia, Gardenia & Evergreen is packaged in a 4LB heavy duty resealable pouch. Pour the necessary quantity with ease and store the rest for future use.
  • COUNTRY OF ORIGIN: USA - Cz Garden fertilizers and soil amendments are manufactured in the USA from the highest quality ingredients.
  • Cz Garden Organics is committed to developing Premium Grade custom soil amendment blends, fertilizers, and nutrients for your organic garden.
8.7
Excellent
Amazon Logo
9
8.7
Excellent
Scotts Company Miracle-Gro 1750011 Water Soluble Miracid Acid-Loving Plant Food, 1-Pound (2)
Scotts

Scotts Company Miracle-Gro 1750011 Water Soluble Miracid Acid-Loving Plant Food, 1-Pound (2)

Why we love it
  • Instantly boosts plant health.
  • Nourishes roots and leaves.
  • Perfect for acid-loving plants.
Main Highlights
  • Miracle gro water soluble fertilizer miracid acid loving plant food
  • Instantly feeds acid loving plants like azaleas, hydrangeas and rhododendrons
  • Double feeding action feeds through both the roots and the leaves
  • Starts to work instantly
  • 2 Pack
8.7
Excellent
Amazon Logo
10
8.7
Excellent
Save 5%
DR EARTH 703P Organic 4 Azalea/Camellia/Rhododendron Acid Fertilizer in Poly Bag, 4-Pound, Natural
Dr. Earth

DR EARTH 703P Organic 4 Azalea/Camellia/Rhododendron Acid Fertilizer in Poly Bag, 4-Pound, Natural

5% Off
Why we love it
  • Safe for people and pets.
  • Continuous feeding for months.
  • 100-percent organic and natural.
Main Highlights
  • People and pets safe when used as directed
  • Provides continuous feed for several months
  • Available in a 4lb size
  • Contains pro-biotic, seven champion strains of beneficial soil microbes plus ecto and endo mycorrhizae
  • Makes soil more acidic; 100-percent natural and organic; superior buds and blooms
  • Exceptional results because nutrients are released quickly; feeds for several months
  • Eight select strains of ecto and endo mycorrhizae contribute to drought tolerance, enhanced nutrient availability and increased plant performance
  • 100-Percent organic formula provides optimum levels of essential plant nutrients; eliminates the need for chemical fertilizers when used as directed
8.7
Excellent
Save 5%
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Related Deals You Might Like for Fertilizer For Gardenias

📊We scanned 583 products
🔍
We reviewed the most relevant Fertilizer For Gardenias offers across Amazon and leading retailers, covering major brands and models. Our shortlist features trusted names like Nelson Plant Food, GARDENWISE, Miracle-Gro, Leaves and Soul, PERFECT PLANTS, HiThrive, SouthernGRO, Cz Garden Supply, Scotts, Dr. Earth, known for dependable quality and smart design.
⭐
To determine today's best Fertilizer For Gardenias, we analyzed 2916 real customer and expert reviews, focusing on satisfaction, real-world performance and long-term reliability. We also weigh each review's relevance, authenticity and freshness for a fair comparison.

Here's what we found:

🏆 #1
Nelson Acid Loving Plant Food Huge Blooms for Azalea Jasmines Roses Camellias Gardenias NutriStar 9-13-11 (2 lb.)

Our overall winner is Nelson Acid Loving Plant Food Huge Blooms for Azalea Jasmines Roses Camellias Gardenias NutriStar 9-13-11 (2 lb.) by Nelson Plant Food. It stands out for the right balance of quality, performance and value.

✨ What sets it apart:
✓Promotes deep, dark green leaves.
✓Immediate results for happy plants.
✓Feed acid-loving plants consistently.
💎 Best Value
GARDENWISE 8-4-8 Acidic Fertilizer for Azaleas, Camellias (Camelia), Hydrangeas, Blueberries, Gardenias, Magnolia Trees, Evergreens, and Rhododendrons - Ideal Iron-Rich Plant Food (1 Quart)

The best value for most shoppers is GARDENWISE 8-4-8 Acidic Fertilizer for Azaleas, Camellias (Camelia), Hydrangeas, Blueberries, Gardenias, Magnolia Trees, Evergreens, and Rhododendrons - Ideal Iron-Rich Plant Food (1 Quart) by GARDENWISE, with consistently high satisfaction across expert and customer reviews.

💰 Best Deal
DR EARTH 703P Organic 4 Azalea/Camellia/Rhododendron Acid Fertilizer in Poly Bag, 4-Pound, Natural

The strongest deal right now for Fertilizer For Gardenias is DR EARTH 703P Organic 4 Azalea/Camellia/Rhododendron Acid Fertilizer in Poly Bag, 4-Pound, Natural at Dr. Earth, currently at 5% off.

🔄Our Fertilizer For Gardenias ranking is updated regularly to reflect new releases and price changes—check back for the latest picks and deals.