Fertilizers & Treatments

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. OL12001- Roadside Grass Seed Mix 25Lb. Image 1 of 1. Showing Roadside Grass Seed Mix 25Lb product label against white background.
    Roadside Grass Seed Mix 25Lb
    $69.95
  2. Image 1 of the Nitrogreen Organic 13 0 0 Fertilizer
    Nitrogreen Organic 13-0-0 Fertilizer
    $15.95
  3. Image 1 of the Florikan® 17-5-11 NPK Max, 140-Day Formula
    Rating:
    95%
    NPK Max 17-5-11 Fertilizer, 140-Day Formula by Florikan
    $126.95
  4. Image 1 of the Leonard 15-7-6 Tree Food for Trees and Shrubs, Box of 40 Stakes
    Rating:
    100%
    Fertilizer Stakes, 15-7-6 Formula for Trees and Shrubs, Box Of 40 Stakes by A.M. Leonard
    $55.95
  5. Image 1 of the The Andersons® 18-24-12 Starter Turf Fertilizer, 50lb Bag
    Rating:
    100%
    Starter Turf 18-24-12 Fertilizer, 50lb Bag by The Andersons
    $91.92
  6. Image 1 of the Osmocote 18 6 12 Slow Release Fertilizer
    Rating:
    100%
    Osmocote 18-6-12 Slow-Release Fertilizer Lo-Start 50#
    $147.95
  7. Image 1 of the Leonard 8-16-16 Tree Food for Fruit and Ornamental Trees, Box of 40 Stakes
    Rating:
    100%
    Fertilizer Stakes, 8-16-16 Formula for Fruit and Ornamental Trees, Box Of 40 Stakes by A.M. Leonard
    $59.95
  8. Image 1 of the Grotab 3-in-1 Premium Plant Starter (12-8-4)
    Rating:
    100%
    Grotab 3-in-1 Premium Plant Starter (12-8-4)
    $55.95
  9. Image 1 showing grouping of Wilt Pruf products.
    Rating:
    96%
    Wilt-Pruf Anti-Transpirant Spray
    $26.95
  10. Image 1 of the Florikan 20 4 9 NPK Plus 180 Day Formula
    Rating:
    100%
    Fertilizer, 20-4-9 NPK Plus, 180-Day Formula, 50lb Bag by Florikan
    $141.95
  11. Image 1 of the Moisture-Loc Anti-Transpirant Spray
    Rating:
    100%
    Moisture-Loc Anti-Transpirant Spray
    $83.95
  12. TAB2010510G Image 1 of 2. Leonard Fertilizer Tablets 10 Gram 22lb/Box 20-10-5
    Fertilizer Tablets, 20-10-5 Formula, 10g, 22 LB, Box of 1000 Tablets by A.M. Leonard
    $101.95
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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.