FoxFarm® Bush Doctor® Wholly Mackerel® Fertilizer 3-1-0 — 1 gal Concentrate

A Fish-Derived Liquid Nutrient That Feeds Plants and Soil Biology Together

FoxFarm Bush Doctor Wholly Mackerel 3-1-0 is a liquid plant nutrient derived from fish, supplying immediately available nitrogen and phosphorus to drive vegetative growth. It is a Registered CDFA Organic Input Material, delivering natural amino acids, trace minerals, and proteins that feed plants directly while also stimulating beneficial soil microbial activity.

Because the nutrients come from fish rather than mineral salts, Wholly Mackerel works for both conventional and organic growing programs that want to bring biology back into the root zone alongside standard feeding.

Key Features & Benefits

• Fish-Derived Formula: Natural nitrogen and phosphorus sourced from fish for sustained vegetative-stage nutrition.
• 3-1-0 NPK Ratio: A high-nitrogen ratio suited to rapid vegetative growth, root development, and post-transplant establishment.
• Stimulates Soil Biology: Fish-derived organic matter feeds beneficial soil microorganisms, supporting nutrient cycling and root zone health.
• CDFA Registered Organic Input Material: Suitable for organic and sustainable growing programs that prioritize naturally derived inputs.
• Liquid Concentrate: Mixes readily into reservoirs and irrigation water for use as a root feed or soil drench.

Who Should Use This

Growers running soil-based or organic programs who need a reliable fish fertilizer during the vegetative stage and early transplant recovery, when nitrogen demand is highest and rapid root establishment matters most, are the direct fit for Wholly Mackerel.

About FoxFarm

FoxFarm Soil & Fertilizer Company, founded in 1984 in Humboldt County, California, formulates fish- and kelp-derived plant nutrients as part of its Bush Doctor supplement line.

Frequently Asked Questions

When is the best time to use Wholly Mackerel in the growth cycle?

Wholly Mackerel is most effective during the vegetative stage and transplant recovery, when demand for immediately available nitrogen is highest. It can be used in smaller amounts through early flowering, though nitrogen rates should decrease as plants move into the reproductive phase.

Does fish fertilizer cause odor issues indoors?

Fish-derived fertilizers do carry a characteristic odor, especially right after mixing. Applying Wholly Mackerel as a root drench rather than a foliar spray, and maintaining good air circulation, helps minimize odor impact on the growing space.

Is Wholly Mackerel safe for beneficial soil microorganisms?

Yes, fish-derived nutrients are widely used to feed and support beneficial soil bacteria and fungi. The amino acids and proteins in Wholly Mackerel provide good nutrition for microbial communities that contribute to long-term soil health.

Can Wholly Mackerel be used in hydroponic systems?

It is primarily recommended for soil and soilless growing rather than recirculating hydroponic systems, since organic fish fertilizers can contribute to biofilm buildup in reservoirs. If used hydroponically, pair it with an enzyme cleaner to help manage organic residue.