Fertilizers & Treatments

Whether you're looking to have the perfect lawn or plant a large garden that thrives with a minimal amount of effort, A.M. Leonard has the fertilizers and treatments you need, including slow-release and organic fertilizers and rooting hormones.

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  1. Image 1 of the Florikan® 17-5-11 NPK Max, 140-Day Formula
    Rating:
    95%
    Florikan; 17-5-11 NPK Max, 140-Day Formula
    $122.40
  2. Image 1 of the Osmocote 14-14-14 Slow Release Fertilizer
    Rating:
    100%
    Osmocote 14-14-14 Slow-Release Fertilizer, 3 to 4 Month
    $125.78
  3. Agriform 20-10-5 Fertilizer Tablets, 2 Year Formula, Box
    Rating:
    100%
    Agriform 20-10-5 Fertilizer Tablets, 2 Year Formula, Box
    $94.15
  4. Image 1 of the Osmocote Fertilizer 15-9-12 Slow Release 8 to 9 Months 50lb Bag
    Rating:
    100%
    Osmocote Fertilizer 15-9-12 Slow Release 8 to 9 Months 50lb Bag
    $140.50
  5. Image 1 of the Osmocote 19-5-8 Slow Release Fertilizer
    Rating:
    100%
    Osmocote 19-5-8 Slow Release Fertilizer
    $134.10
  6. Image 1 of the Agriform Fertilizer Tablets 21 Gram 20-10-5 2 Year Release 500 per Case
    Rating:
    100%
    Agriform Fertilizer Tablets 21 Gram 20-10-5 2 Year Release 500 per Case
    $94.15
  7. Image 1 of the The Andersons® 18-24-12 Starter Turf Fertilizer, 50lb Bag
    Rating:
    100%
    The Andersons 18-24-12 Starter Turf Fertilizer, 50lb Bag
    $89.80
  8. 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
    $64.55
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A.M. Leonard knows you want to grow the healthiest and most beautiful plants and lawn possible. When plants are at their healthiest, they reach their full size, greatest strength, and biggest yield. Our fertilizers, treatments, and plant food helps lawns and plants grow big, strong, and green as can be. Healthy plants simply look the best. They have the largest, most beautiful flowers and vibrant green leaves. They are the tallest trees that produce the most and best-tasting fruit. With strong roots and stems, healthy plants are also more resistant to anything that might harm them. No matter if you‘re growing a tree, a vegetable, or a flower, we have the plant food you need.

Slow-release fertilizers such as the Osmocote 14-14-14 are very popular products, offering a wide range of uses from greenhouse to planter and cutting down labor with their time-release formulas. We also carry plant and flower fertilizers including brands such as BioPlex and Grotab, lawn and grass fertilizers, and organic options as well. And when your plants and yards begin to thrive, keep it that way with our herbicides, fungicides, and insecticides.

If you're just getting started or preparing for your next task, we carry a range of greenhouse supples including grow lights and seed starting supplies, as well as nursery supplies including a variety of pots and ground cover options.