FoxFarm Happy Frog Cavern Culture Fertilizer 1-12-0 | 4lb - OMRI Listed - (Case of 12)

Guano-Based Granular Feed for Flowering and Bud Development

Guano has supplied gardeners with a concentrated, natural phosphorus source for centuries, long before synthetic fertilizer existed, and that history is exactly what FoxFarm draws on with Cavern Culture. Happy Frog Cavern Culture 1-12-0 blends bat and seabird guano with rock phosphate and soil microbes into a granular formula aimed at flowering and bud development.

The 4lb OMRI Listed bag, sold in a case of 12, suits retailers and growers who regularly fertilize flowering plants and want a phosphorus-rich, guano-based option in granular form.

Key Features & Benefits

• OMRI Listed — qualifies the guano-and-rock-phosphate blend for organic bloom-stage feeding.
• Bat and seabird guano blend — a traditional, concentrated organic phosphorus source.
• Rock phosphate included — adds phosphorus from a mineral source alongside the guano.
• Soil microbes — supports root-zone health alongside the nutrient load.
• Mycorrhizal fungi — extends root reach so the plant taps more of the phosphorus already in the soil.

Who Should Use Cavern Culture Fertilizer

Gardeners and growers who want an OMRI Listed, guano-based flowering fertilizer, particularly for plants with significant phosphorus demand during bud development, are the fit for Cavern Culture.

About Fox Farms

FoxFarm's Happy Frog Cavern Culture draws on the long tradition of guano-based gardening fertilizers, produced at the company's Humboldt County, California operation alongside the rest of its granular soil amendment line.

Frequently Asked Questions

What is Cavern Culture's NPK ratio and what does it support?

It carries a 1-12-0 ratio, with high phosphorus at 12% aimed squarely at flowering and bud development. The near-absence of nitrogen and potassium reflects its role as a targeted bloom-stage input rather than an all-purpose feed.

What types of guano are in this fertilizer?

It's a proprietary blend of bat guano and seabird guano, combined with rock phosphate and soil microbes. That combination gives it both an organic and a mineral phosphorus source.

Is Happy Frog Cavern Culture OMRI Listed?

Yes, the guano-and-rock-phosphate blend carries OMRI Listing. That makes it suitable for a fully organic flowering or bud-development feeding program.

When should I apply Cavern Culture during my growing season?

Apply at the start of the flowering stage and continue through bud development, since the high phosphorus content is timed for that window specifically. Applying much earlier in vegetative growth isn't the intended use.

Does Cavern Culture include mycorrhizal fungi?

Yes, mycorrhizal fungi are included to help improve root efficiency and nutrient uptake alongside the guano-and-phosphate nutrient load. That's on top of the soil microbes already blended into the granular formula.