Fertilizers, Nutrients & Additives

Fertilizers, Nutrients & Additives

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      Support strong, vibrant growth with premium fertilizers, nutrients, and additives. From balanced NPK formulas to Cal-Mag supplements, root stimulants, bloom boosters, and microbial enhancers, these products help your plants thrive in any system—soil, hydroponic, or container. Feed your plants exactly what they need, when they need it.

      Need to build better soil first? Browse our Soil and Soil Amendments for essential ingredients that strengthen your growing foundation.

      180 products
      Wiggle Worm Soil Builder PURE Worm Castings
      Starting at $12.60

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      Espoma 4 lb. Bag Organic Berry-Tone 4-3-4
      $11.92

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      Jack’s Bloom Booster 10-30-20 Flower Fertilizer
      Starting at $8.40

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      Espoma Organic Tomato-Tone 3-4-6
      Starting at $11.92

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      Jack's Classic 12-15-30 Tomato FeED
      $15.19

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      Espoma Bio-Tone Starter Plus 4-3-3 with Mycorrhizae
      Starting at $8.59

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      Espoma Organic Plant-Tone 5-3-3
      Starting at $11.92

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      Espoma Organic Holly-tone 4-3-4
      Starting at $9.55

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      Jack's Classic 20-20-20 All Purpose Fertilizer
      Starting at $8.40

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      Jack's Professional 20-20-20 General Purpose Fertilizer
      Starting at $85.47

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      Calcinit® 50 lb. Bag Calcium Nitrate Formula for Fertilizer
      $58.00

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      Espoma 25 lb. Bag Bio-Tone Starter 4-3-3
      $37.99

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      Espoma Organic Garden-Tone 3-4-4
      Starting at $11.92

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      Espoma Organic Bone Meal 4-12-0
      Starting at $8.25

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      Espoma Organic Soil Acidifier
      $12.99

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      Espoma® Organic Chicken Manure 5-3-2
      $19.99

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      Premier PRO-MIX Premium All-Purpose Mix with MYCOACTIVE
      $39.99

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      Espoma Organic Rose-Tone 4-3-2
      Starting at $11.92

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      Hormodin 2 Rooting Hormone
      $48.80

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      Jack's Nutrients Calcium Nitrate Part B Fertilizer
      Starting at $19.29

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      Jack's Fertilizer 20-3-19 Petunia FeED
      $65.00

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      Jack's Nutrients 5-12-26 Part A Fertilizer
      Starting at $25.32

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      Bone Meal 4 lb. Bag 0-10-0
      $7.99 $9.99

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      Osmocote Pro 19-5-8 Fertilizer
      $229.00

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      Espoma 4 qt. Bag Earthworm Castings
      $15.82

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      Hormodin 3 Rooting Hormone
      $37.80

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      Proven Winners Premium Water Soluable Plant Food
      $19.99

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      Jack's ClassiCote 15-8-23 with Crystal Green
      Starting at $45.99

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      Coop Poop All Purpose Garden Food
      $24.72

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      Drammatic ONE Organic Liquid Fertilizer 4-4-1
      Starting at $41.16

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      Wormganic 1 cu. ft. Bag Organic Worm Castings
      $28.80

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      Jack's Classic 20-10-20 Citrus FeED
      $15.21

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      Espoma® Organic Citrus-Tone 5-2-6
      $9.99

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      True Organic 3 lb. Bag Blood Meal
      $11.12

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      Espoma 4 qt. Bag Horticultural Charcoal
      $20.55

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      Neptune's Harvest Hydrolized Fish & Seaweed Fertilizer
      $50.10

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      Bonide Bontone II Rooting Powder
      $5.99

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      Espoma 4 lb. Bag Organic Flower-Tone 3-4-5
      $11.92

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      Hormodin 1 Rooting Hormone
      $34.19

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      Osmocote Plus 15-9-12 Fertilizer
      $199.99

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      Blood Meal 2.75 lb. Bag 12-0-0
      $11.68

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      Espoma 4 lb. Bag Bulb Tone 3-5-3
      $11.92

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      Jack's Orchid Special 30-10-10 Fertilizer
      $9.20

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      Earth Science® 2.5 lb. Bag Fast Acting Sulfur
      $12.55

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      Espoma® Garden Food 10-10-10
      $15.75

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      True Organic 3 lb. Bag Bone Meal 7-7-0
      $10.57

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      Proven Winners Premium Continuous Release Plant Food
      $23.99

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      Osmocote 14-14-14 Fertilizer
      $176.00

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