Looking for the Best Slow Release Fertilizer available to buy right now on Amazon but don’t want to have to do all the research on the pros and cons of the different types of Slow Release Fertilizer?
Pop Expert have put together this list of the top 10 selling Slow Release Fertilizer on Amazon – sorted by overall popularity and positive consumer reviews.
The Pop Expert list of top selling Slow Release Fertilizer is the ideal place to start when you are trying to find the Best Slow Release Fertilizer for your neeeds.
Popular Slow Release Fertilizer on Amazon
![Organic Plant Magic - Truly Organic™ Slow Release Granular Fertilizer : Long-Lasting Plant Food Granules - Indoor & Outdoor Flowers, Vegetable Gardens, Fruit Trees, Shrubs, House Plants [One 4 lb Bag]](https://popexpert.com/wp-content/plugins/aawp/public/image.php?url=YUhSMGNITTZMeTl0TG0xbFpHbGhMV0Z0WVhwdmJpNWpiMjB2YVcxaFoyVnpMMGt2TlRGSWVWRlZWRVF0VjB3dWFuQm58MTc2MDg3NDEzNQ=)
Details on the Best Slow Release Fertilizer
On Sale!Bestseller No. 1
Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁, Granular Fertilizer with 11 Essential Nutrients, 2 lbs.
- Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁ granular plant food contains 11 essential nutrients and feeds live plants up to 6 full months
- This fertilizer works with virtually all plant varieties and growing conditions
- Each granule is coated with a unique resin that controls nutritional release so plants get what they need when they need it
- Osmocote offers a no-burn pledge, when used as directed
- One 2 lb. container of Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁ covers up to 75 sq. ft.
$14.99
−$6.00
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Bestseller No. 2
Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁, Granular Fertilizer with 11 Essential Nutrients, 8 lbs.
- Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁ granular plant food contains 11 essential nutrients and feeds live plants up to 6 full months
- This fertilizer works with virtually all plant varieties and growing conditions
- Each granule is coated with a unique resin that controls nutritional release so plants get what they need when they need it
- Osmocote offers a no-burn pledge, when used as directed
- One 8 lb. container of Osmocote Smart-Release Plant Food Plus Outdoor & Indoor₁ covers up to 300 sq. ft.
Bestseller No. 3
Osmocote Smart-Release Plant Food Plus Outdoor and Indoor, For Most Plant Types, In-Ground and Container Plants, Contains 11 Essential Nutrients, 8 lb.
- Osmocote Smart-Release Plant Food Plus Indoor & Outdoor is fortified with 11 essential nutrients
- This plant food feeds plants for up to 6 months with all-in-one granules, each containing 15-9-12 NPK and secondary nutrients
- For indoor and outdoor plants, this all-purpose plant food works with virtually all plant types and growing conditions, including containers and in-ground gardens
- To apply to outdoor container and in-ground plants, sprinkle 1 scoopful per 2 gal. pot or 4 sq. ft. of garden area and mix into the top 1-3 inches of soil; water regularly and reapply every 6 months
- One 8 lb. container of Osmocote Smart-Release Plant Food Plus Indoor & Outdoor feeds approximately 300 sq. ft. of garden area
On Sale!Bestseller No. 4
Osmocote Smart-Release Plant Food Plus Outdoor & Indoor, 1 lb.
- Our best formula, fortified with 11 essential nutrients
- Works with virtually all plant varieties, in all growing conditions
- Feeds up to 6 full months
- Apply with confidence to potted plants, indoors or outdoors
- No-burn pledge when used as directed
$9.99
−$1.40
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On Sale!Bestseller No. 5
Miracle-Gro Shake 'N Feed All Purpose Plant Food, For In-Ground and Container Plants, Feeds for up to 3 Months, 4.5 lbs.
- Miracle-Gro Shake 'N Feed All Purpose Plant Food feeds plants for up to 3 months, and nourishes above and below the soil
- This plant food contains vital micronutrients to grow stronger, vibrant, and more productive plants (vs unfed plants)
- Use this all-purpose plant food with most plants, whether indoor or outdoor container plants or in-ground plants, and most plant types, including flowers, vegetables, and herbs
- Apply this garden product evenly onto the soil and work into the top 1-3 inches of soil for in-ground plants, or lightly work into the soil of established container plants; water to start feeding
- Reapply Miracle-Gro Shake 'N Feed All Purpose Plant Food every 3 months and water regularly for a beautiful garden all season long
$19.49
−$9.49
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Newest Slow Release Fertilizer
New
35 oz Fiddle Leaf Fig Plant Food for All Fig and Other Ficus Trees, Microbial Organic Liquid Houseplant Fertilizer for Ficus Plants, Ideal Fiddle Leaf Fertilizer
- PROMOTES RESILIENCE: Strengthens the fiddleleaf fig's natural defenses against environmental influences and pests with a rich blend of major and trace nutrients.
- IMPROVES PLANT GROWTH: High nitrogen content promotes rapid and healthy growth, supporting strong green leaves and dense vines.
- FAST AND EFFECTIVE NUTRIENT ABSORPTION: Chelated mineral ingredients ensure immediate availability and optimal nutrient absorption.
- LONG-TERM EFFECT - Our liquid fertilizer is not only a slow-release fertilizer, but also improves soil structure and plant health thanks to the chelated trace elements.
- EASY DOSAGE - Add 1 capful (50 ml) of lemon tree fertilizer to approximately 10 liters of water and water. Repeat every 7 days in spring and summer, and every 15 days in fall and winter.
New
Fiddle Leaf Fig Tree Fertilizer & Plant Food by NitroGene Tech | 8 oz Liquid Indoor Plant Food | 3-1-2 NPK with Micronutrients for Healthy Growth in Ficus Lyrata Plants
- REVITALIZE YOUR PLANTS: NitroGene Tech's liquid fertilizer is the ultimate plant food for your Fiddle Leaf Fig Tree. Our potent formula is designed to nourish Ficus Lyrata and other indoor plants, promoting vibrant, beautiful foliage and strong root systems.
- PERFECT 3-1-2 RATIO: This 3-1-2 fertilizer provides the ideal balance of nutrients. High-quality nitrogen, phosphorus, and potassium in our indoor plant food work together to support vigorous growth and prevent yellowing leaves and brown spots.
- ESSENTIAL MICRONUTRIENTS: Unlike other fertilizers, our plant food is enriched with vital micronutrients. This urea-free liquid fertilizer is gentle on roots and provides your fiddle leaf fig tree with all it needs for lush, healthy growth without fertilizer burn.
- EASY TO USE: Just add one teaspoon of our concentrated liquid fertilizer to water during your regular watering schedule. This 8 oz bottle of premium indoor plant food provides a long-lasting supply, making plant care for your Fiddle Leaf Fig Tree simple.
- MADE IN THE USA: Trust in an American-made product. NitroGene Tech's Fiddle Leaf Fig Tree fertilizer and plant food is proudly formulated and manufactured in the USA to ensure the highest quality and care for your beloved plants.
New
Down to Earth Alfalfa Meal Fertilizer 2-0-1 – 4 lb Organic, Non-GMO, OMRI Listed for Organic Gardening Pack of 2
- Down To Earth Alfalfa Meal is a five pound box of all natural fertilizer with 2-0-1 formula and is listed by the Organic Materials Review Institute (OMRI) for use in organic production
- Alfalfa Meal is a rich source of trace elements and natural growth stimulants and an excellent soil conditioner that accelerates growth and promotes larger, more plentiful blooms
- Easy-to-Use and Long-Lasting: Available in convenient 4 lb bags, this product comes in a pack of two, offering plenty of fertilizer for multiple gardening applications. Its slow-release nature means nutrients feed plants gradually, reducing the need for frequent reapplication.
- Ideal for a Variety of Plants: Perfect for vegetables, flowers, herbs, and fruit trees, alfalfa meal helps improve soil structure and encourages beneficial microbial activity, leading to more vigorous and productive plants in your garden.
- Balanced Nutrient Profile (2-0-1 NPK): With 2% nitrogen and 1% potassium, this fertilizer provides gentle, steady nutrient release to support healthy plant growth, promote strong root development, and improve soil fertility over time without the risk of over-fertilizing.
New
Old Cobblers Farm™ Wicked Growth Garlic + Onion Fertilizer–Nourishes Roots,Enhances Flavor, and Boosts Plant Health with Eco-Friendly Slow-Release Nutrients for Robust Growth (5/110/15/20 lbs) (10lb)
- Supports Root Development This garlic and onion fertilizer is specially crafted to encourage stronger root systems, ensuring bulbs develop a solid foundation for healthy growth. With phosphorus-rich nutrition, it promotes faster establishment and resilience in your allium crops. Whether you’re planting garlic cloves or onion sets, consistent root strength sets the stage for better nutrient uptake and long-term garden success.
- Promotes Healthy Tops Balanced nitrogen levels fuel lush green top growth, which is essential for photosynthesis and overall bulb development. Strong leafy tops ensure your garlic, onions, shallots, and leeks have the energy to form larger, well-shaped bulbs. By supporting steady foliage growth, this fertilizer helps maximize yields while keeping plants vibrant throughout the growing season.
- Enhances Bulb Size and Flavor Formulated with potassium to strengthen plant tissues, this fertilizer helps produce firmer, denser bulbs with excellent flavor and storage qualities. Uniform sizing makes harvesting easier, while enhanced density improves bulb quality and taste. Perfect for gardeners who want flavorful garlic and onions that store longer, this formula ensures dependable performance from planting to harvest.
- Enhances Flavor and Growth: Our fertilizer not only boosts plant health but also enhances the flavor of your produce. By improving soil conditions and providing essential nutrients, it ensures your asparagus, garlic, and onions are not just plentiful but also rich in taste.
- Long-Lasting Slow Release Feeding Designed with controlled-release nutrients, this fertilizer provides continuous nourishment over time, eliminating the need for frequent reapplication. Consistent feeding ensures bulbs receive the right nutrition throughout their entire growth cycle. This not only saves time but also supports more even growth, leading to a bountiful and predictable harvest of high-quality bulbs.
On Sale!New
Evergreen & Orchid Bloom – Orchid & Houseplant Fertilizer Sticks Bundle
- Complete Plant Care Bundle: Includes liquid fertilizer sticks for both orchids and green plants, giving your entire indoor garden the balanced nutrients it needs.
- Convenient Fertilizer Sticks: Easy-to-use liquid sticks feed plants continuously, helping orchids bloom beautifully and houseplants stay healthy and vibrant.
- Formulated for Growth & Blooms: Orchid sticks encourage strong roots and longer-lasting flowers, while plant sticks support lush green leaves and steady growth.
- Mess-Free, Long-Lasting Feeding: Simply insert the sticks into the soil for slow, steady nutrient release with no mixing or measuring required.
- Perfect for Indoor & Potted Plants: Ideal for orchids, houseplants, office plants, and decorative greenery—everything you need to keep your plants thriving.
$25.78
−$1.29
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