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 Osmocote 14-14-14 Slow Release Fertilizer
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    100%
    Osmocote 14-14-14 Slow-Release Fertilizer, 3 to 4 Month
    $106.99
  2. Image 1 of the Florikan® 17-5-11 NPK Max, 140-Day Formula
    Rating:
    95%
    Florikan; 17-5-11 NPK Max, 140-Day Formula
    $107.52
  3. Agriform 20-10-5 Fertilizer Tablets, 2 Year Formula, Box
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    Agriform 20-10-5 Fertilizer Tablets, 2 Year Formula, Box
    $86.05
  4. Image 1 of the Osmocote Fertilizer 15-9-12 Slow Release 8 to 9 Months 50lb Bag
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    Osmocote Fertilizer 15-9-12 Slow Release 8 to 9 Months 50lb Bag
    $128.19
  5. Image 1 of the Osmocote 19-5-8 Slow Release Fertilizer
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    Osmocote 19-5-8 Slow Release Fertilizer
    $115.77
  6. Image 1 of the The Andersons® Humic DG Granular Soil Conditioner (Humic Acid), 40lb Bag
    Rating:
    96%
    The Andersons® Humic DG Granular Soil Conditioner (Humic Acid), 40lb Bag
    $61.50
  7. Image 1 of the Agriform Fertilizer Tablets 21 Gram 20-10-5 2 Year Release 500 per Case
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    100%
    Agriform Fertilizer Tablets 21 Gram 20-10-5 2 Year Release 500 per Case
    $86.05
  8. Image 1 of the Florikan 12 4 11 NPK Plus with CaNO3 180 Day Formula
    Rating:
    100%
    Florikan; 12-4-11 NPK Plus with CaNO3, 180-Day Formula
    $115.26
  9. Image 1 of the Osmocote 18 6 12 Slow Release Fertilizer
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    100%
    Osmocote 18-6-12 Slow-Release Fertilizer
    $120.89
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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.