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

Fish-Derived Liquid Plant Nutrient for Immediate Nitrogen Availability and Vigorous Vegetative Growth

FoxFarm® Bush Doctor® Wholly Mackerel® Fertilizer 3-1-0 is a liquid plant nutrient derived from fish, delivering immediately available nitrogen and phosphorus to drive vigorous vegetative growth. A Registered CDFA Organic Input Material, Wholly Mackerel provides naturally occurring amino acids, trace minerals, and proteins that not only feed your plants directly but also stimulate soil biological activity — making it a powerful tool for both conventional and organic growing programs.

Key Features & Benefits

• Fish-Derived Formula: Natural nitrogen and phosphorus sourced from fish provide both immediately available and slowly released nutrition to support sustained, vigorous plant growth throughout the vegetative stage.
• 3-1-0 NPK Ratio: High-nitrogen formula with complementary phosphorus — ideal for supporting rapid vegetative growth, strong root development, and healthy establishment after transplant.
• Stimulates Soil Biology: Fish-derived organic matter feeds and activates beneficial soil microorganisms, improving nutrient cycling, root zone health, and long-term soil vitality over multiple growing cycles.
• CDFA Registered Organic Input Material: Suitable for use in organic and sustainable growing programs that prioritize naturally derived, biologically active inputs.
• Liquid Concentrate: Mixes readily into nutrient reservoirs and irrigation water for easy application as a root feed or supplemental soil drench.
• From the Bush Doctor® Line: Part of FoxFarm’s trusted organic supplement series for growers who want to bring biology back to the root zone.

Who Should Use This

Wholly Mackerel is well suited to vegetable and flower growers, indoor cultivators, and anyone running a soil-based or organic growing program who needs a reliable, high-quality fish fertilizer. It is particularly effective during the vegetative stage and early transplant recovery when nitrogen demand is high and rapid root establishment is the priority.

Compatibility

Wholly Mackerel is compatible with soil and soilless growing media. It can be applied as a soil drench, worked into compost tea programs, or used as a diluted foliar spray. It pairs well with other Bush Doctor products from the FoxFarm line, including Kelp Me Kelp You®, for a complete organic biostimulant and nutrition program.

Frequently Asked Questions

What 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 plants have the highest demand for immediately available nitrogen. It can also be used in small amounts through early flowering, though nitrogen rates should generally be reduced as plants transition to the reproductive phase.

Does fish fertilizer cause odor issues in indoor growing environments?

Fish-derived fertilizers do have a characteristic odor, especially when freshly mixed. In indoor growing environments, applying Wholly Mackerel as a root drench rather than a foliar spray and ensuring good air circulation will minimize any odor impact on the growing space.

Is Wholly Mackerel safe for use with beneficial soil microorganisms?

Yes. Fish-derived nutrients are widely regarded as one of the best ways to feed and support beneficial soil bacteria and fungi. The amino acids and proteins in Wholly Mackerel provide excellent nutrition for microbial communities that contribute to long-term soil health and nutrient availability.

Can I use Wholly Mackerel in hydroponic systems?

Wholly Mackerel is primarily recommended for soil and soilless growing programs rather than recirculating hydroponic systems, as organic fish fertilizers can contribute to biofilm build-up in reservoir systems. If used in hydroponic applications, consider pairing with an enzyme cleaner to manage any organic residue.

Is Wholly Mackerel suitable for certified organic production?

Wholly Mackerel is a Registered CDFA Organic Input Material, making it suitable for use in California Certified Organic programs. Check with your certifier to confirm compliance with your specific organic certification requirements before use.