Slow Release Fertilizer

A.M. Leonard stocks a huge variety of effective slow and control release fertilizers fit for a variety of uses. From greenhouses to container plants, there is no shortage of applications that can benefit from timed-release fertilization techniques. A slow-release fertilizer over several months or years results in labor savings, a greater yield, more stable nutrition for your plants, and ultimately a more consistent growth quality. It is the perfect choice for professional landscapers, gardeners, and nursery workers looking for an economical alternative to water-soluble fertilizers.
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  1. Image 1 of the Florikan® 18-5-12 NPK Plus, 140-Day Formula
    Rating:
    100%
    NPK Plus 18-5-12 Fertilizer, 140-Day Formula by Florikan
    $136.95
  2. Image 1 of the Florikan 14 14 14 NPK 90 Day Formula
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    100%
    Fertilizer, 14-14-14 NPK, 90-Day Formula by Florikan
    $131.95
  3. Image 1 of the Florikan 20 4 9 NPK Plus 180 Day Formula
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    Fertilizer, 20-4-9 NPK Plus, 180-Day Formula, 50lb Bag by Florikan
    $141.95
  4. Image 1 of the Florikan Meg Iron V Micronturient Mix
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    Meg-Iron V Micronutrient Mix by Florikan
    $69.95
  5. Image 1 of the Florikan 12 4 11 NPK Plus with CaNO3 180 Day Formula
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    100%
    Fertilizer, 12-4-11 NPK Plus with CaNO3, 180-Day Formula by Florikan
    $148.95
  6. Image 2 of the Anderson's All Purpose Fertilizer, 18-6-12
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    100%
    Fertilizer, 18-6-12 All-Purpose Formula by The Andersons
    $102.27
  7. Image 1 of the HyR BRIX Tomato Fertilizer 50 Pound Bag
    Rating:
    84%
    Tomato Fertilizer, 45lb Bag by HyR BRIX
    $69.95
  8. Image 1 of the HyR BRIX Fruit and Berry Fertilizer 50 Pound Bag
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    Fruit and Berry Fertilizer, 45lb Bag by HyR BRIX
    $61.95
  9. Image 1 of the Florikan 16 5 11 NPK MAX with Nanoprill 90 Day Formula
    Rating:
    87%
    Fertilizer, 16-5-11 NPK Max with Nanoprill, 90-Day Formula by Florikan
    $150.95
    $85.88
  10. Image 1 of the HyR BRIX Vegetable Fertilizer, 45-Pound Bag
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    Vegetable Fertilizer, 45lb Bag by HyR BRIX
    $66.95
  11. Image 1 of the HyR BRIX Lawn Fertilizer 50 Pound Bag
    Rating:
    93%
    Lawn Fertilizer, 22-7-7, 45lb Bag by HyR BRIX
    $65.95
  12. Image 2 of the HyR BRIX Sweet Corn Fertilizer 50 Pound Bag
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    Sweet Corn Fertilizer, 45lb Bag by HyR BRIX
    $102.95
  13. Nutra Pro Tree and Evergreen Fertilizer, 3-Year Controlled Release Pack of 10
    Rating:
    100%
    Nutra Pro Tree and Evergreen Fertilizer, 3-Year Controlled Release Pack of 10
    $23.95
  14. ICL Osmocote Plus Fertilizer Tablets 15-8-11 - Cardboard box of 1,000 tablets on white background - Image 1 of 1
    Osmocote Plus Fertilizer Tablets, 15-8-11 Formulation, 7.5g Tablets, 1,000 Count
    $115.45
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We stock slow-release fertilizers from top brands in the industry like Scott, Florikan, and NutriPak, plus our own premium-quality Leonard-brand products. Our customers love our selection of Leonard slow-release fertilizers. These time-release tablets provide trees, shrubs, and other plants with much-need nutrients at release rates of 3 months, 12 months, or 24 months. They are ideal for horticultural professionals seeking effective tree fertilization solutions at a great value.

Another option is our top-selling Florikan 3-4 Month Nano-Prill Time-Release Fertilizer, an advanced, economical controlled-release fertilizer that features a prill count ten times greater than standard controlled-release fertilizers. This is a safe and efficient solution to getting the most out of your grow operations.

Whatever your line of work or industry, there's no excuse to miss out on money- and time-saving techniques. Trust A.M. Leonard to deliver superior slow and control release fertilizers at competitive prices that you just can't ignore.