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.

View as Grid List

Items 73-96 of 173

Set Descending Direction
  1. Image 1 of the Osmocote 18 6 12 Slow Release Fertilizer
    Rating:
    100%
    Osmocote 18-6-12 Slow-Release Fertilizer
    $138.45
  2. Image 1 of the Terra-Sorb Hydrogel - Horticultural Grade - Bulk Sizes
    Rating:
    100%
    Terra-Sorb Hydrogel - Horticultural Grade - Bulk Sizes
    $113.75
  3. 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
    $138.50
  4. Image 2 of the The Andersons 25-0-3 Turf Fertilizer with 2% Iron, 50lb Bag
    Rating:
    100%
    Fertilizer, 25-0-3 Turf Formula with 2% Iron, 50lb Bag by The Andersons
    $69.25
  5. Image 1 of the Peters Peat Lite Blossom Booster Fertilizer, 10-30-20
    Rating:
    100%
    Fertilizer, 10-30-20 Peat Lite Blossom Booster, 25-Pound Bag by Peters Professional
    $77.80
  6. 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)
    $46.50
  7. Image 1 of the MycoApply Soluble MAXX Mycorrhizae
    Rating:
    100%
    MycoApply Soluble MAXX Mycorrhizae, 1lb Bag
    $43.45
  8. Moisture-Loc Anti-Transpirant Spray
    Rating:
    100%
    Moisture-Loc Anti-Transpirant Spray
    $79.95
  9. Image 1 of the Moisture-Loc Anti-Transpirant Spray 5 Gallons
    Moisture-Loc Anti-Transpirant Spray, 5-Gallon Jug
    $269.75
  10. Image 1 showing A19NBR50 bag on white background.
    Rating:
    100%
    Fertilizer, 19-0-6 Turf Formula with 0.21% Barricade Pre-Emergent Herbicide, 50lb Bag by The Andersons
    $62.85
    $23.82
  11. Image 1 showing A211MR5 bag on white background.
    Rating:
    100%
    Fertilizer, 21-0-4 Turf Formula with 0.2% Merit Insecticide, 50lb Bag by The Andersons
    $64.85
Page
per page

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.