Happy Frog® Cavern Culture® Fertilizer

A Blend of Bat Guano, Seabird Guano and Rock Phosphate
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Guanos have been used for centuries as fertilizers for all kinds of plants. Happy Frog® Cavern Culture® Fertilizer is a proprietary blend of bat and seabird guano, rock phosphate and soil microbes that is specially formulated to deliver the nutrition necessary for flowering and bud development. Mycorrhizal fungi are included to help increase root efficiency, which may enhance nutrient uptake and water absorption. Experience the tried-and-true successes of our ancestors with Cavern Culture® in your own backyard. OMRI Listed® and Registered CDFA Organic Input Material.

Happy Frog®—Crafted For Organic Gardening

How to Use

New Container Plants:

Add 2/3 cup of Happy Frog® Cavern Culture® Fertilizer per 5 gallons of soil. Fill container with mixture and set plant at appropriate height. Tamp soil gently to secure plant and water thoroughly. Begin a regular feeding schedule in three weeks with a blended Happy Frog® fertilizer specifically formulated for your plant’s needs.

New In-Ground Plantings:

Mix 2 parts of your preferred FoxFarm soil conditioner with one part native soil. Add 1/2 cup of Happy Frog® Cavern Culture® Fertilizer per 5 gallons of soil mixture or 10 cups per 100 gallons of soil mixture. Fill hole while setting plant at correct height. Tamp soil gently to secure plant and water thoroughly. Begin a regular feeding schedule in three weeks with a blended Happy Frog® fertilizer specifically formulated for your plant’s needs.

Established Plants:

Plant Height1-2 ft.2-3 ft.3-5 ft.5 ft.+
How Much1 cup1 1/2 cups2 cups3 cups

Feed by top-dressing in early spring and once again in late fall or at first signs of bud development. Lightly scratch into the top one inch of soil and water thoroughly.

New Row Plantings:

Till in a 3-6″ layer of your preferred FoxFarm soil conditioner to a depth of 8-12 inches. Add 1 cup Happy Frog® Cavern Culture® Fertilizer per 10 square feet of planting area and mix thoroughly. Set plants at correct height and water thoroughly. Begin a regular feeding schedule in three weeks with a blended Happy Frog® fertilizer specifically formulated for your plant’s needs.

Established Row Plantings:

  • Apply 2 cups per ten square feet of plating area.
  • Feed by top-dressing in early spring and once again in late fall or at first signs of bud development. Lightly scratch into the top one inch of soil and water thoroughly.

Available Sizes:

50 lb.