Fish Emulsion Fertilizer
Salmon-based fish emulsion fertilizer for plant growth and soil vitality. Mixes easily into water for gentle, consistent feeding in gardens, containers, and growing media.
The liquid formula fits into regular watering, making consistent feeding easy for everyday plant care.
Why You'll Love It
- Organic Nutrition A salmon-based emulsion for gentle, consistent organic feeding.
- Healthier Soil Supports soil vitality alongside the plants growing in it.
- Easy to Use Mixes into water rather than needing to be worked into the bed.
Made by growers
More than a bottle on a shelf.
- Talk to real plant people. The team that mixes the formula answers your email.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- We're growers, not resellers. We use this on our own plants before it ships.
- Bundle savings only here. Pair any two TPS formulas — your order ships free.
Salmon-based fish emulsion fertilizer for plant growth and soil vitality. Mixes easily into water for gentle, consistent feeding in gardens, containers, and growing media.
How to Use Fish Emulsion Fertilizer
| Method | Amount | How Often |
|---|---|---|
| Watering can (spring & summer) | 2 to 4 Tbs per gallon of water | Apply every 1-2 weeks |
| Watering can (fall & winter) | Same dilution | Apply every 4 weeks |
| Hose end sprayer | Set dial to 2 oz (60mL) setting | Apply every 1-2 weeks in spring and summer |
Mix into your normal watering — no separate feeding routine needed. Mix it outdoors or in a well-ventilated spot and water it into the soil rather than leaving it on the surface, which keeps the fish smell brief.
What's Inside
One functional ingredient: fish protein hydrolysate, with phosphoric acid to stabilize pH in the bottle. The 4-2-0.4 analysis is nitrogen-forward by nature — 3% ammoniacal nitrogen plus 1% other water-soluble nitrogen, the protein-bound fraction — which makes this a leaf-and-shoot feed first: greens, lettuce, herbs, young transplants, and anything you want putting on foliage.
The delivery is what sets it apart from mineral fertilizers. Protein nitrogen isn't immediately plant-available; soil microbes have to break it down first, so the feed releases over weeks rather than at once, with less leaching and low burn risk. Phosphate at 2% supports roots and flowering, but potash is minimal at 0.4% — fish emulsion has never been a potassium source, so fruiting and flowering plants heading into their productive phase need a potassium-carrying fertilizer alongside it.
Made For
Leafy vegetables and greens, herbs, seedlings and transplants, annual flower beds, lawns, and houseplants — anywhere you want steady nitrogen for foliage — and gardeners who prefer feeding soil biology over applying straight mineral salts.
Problems It Solves
- Pale, slow-growing leafy greens and herbs
- Seedlings and transplants needing gentle, steady nitrogen
- Beds where quick-release fertilizer washes through before plants use it
- Soil that needs feeding, not just plants
FAQs
How often should I use fish emulsion?
Mix 2 to 4 Tbs per gallon of water and apply every 1-2 weeks in spring and summer, dropping to every 4 weeks in fall and winter. A hose end sprayer set to the 2 oz (60mL) setting covers beds and lawns. Start at the lower end of the dilution range for seedlings and houseplants, and use the higher rate for hungry leafy crops in full growth.
Does fish emulsion smell, and how long does it last?
Yes — it smells like fish, most strongly while you're mixing and pouring. Watered into the soil rather than left on the surface, the odor usually fades within a day or two outdoors. Indoors it lingers longer in a closed room, so many people use it on houseplants only when they can ventilate, or choose a mineral formula for indoor pots and save this for the garden.
Will fish emulsion attract animals to my garden?
It can — the smell that fades for you is still detectable to dogs, cats, and raccoons for a while. Watering it in thoroughly rather than leaving residue on the soil surface is the main defense, and applying in the morning gives it time to soak before night. If neighborhood animals dig in your beds already, expect to water in especially well or use it in areas they don't visit.
Is fish emulsion better than synthetic fertilizer?
It's different, with real tradeoffs. Fish emulsion feeds through soil microbes, releasing slowly, resisting leaching, and carrying low burn risk — good for soil biology and steady growth. Mineral fertilizers act faster and let you dial in exact ratios. This one is also nitrogen-heavy and nearly potassium-free, so it's excellent for leafy growth and incomplete for fruiting plants, which need potassium from another source.
Can I use fish emulsion on tomatoes and peppers?
Early on, yes — it builds the leafy framework young plants need. But once flowering and fruiting start, potassium becomes the limiting nutrient, and at 0.4% potash this can't supply it; fed alone through fruiting, you'd get big leafy plants and mediocre fruit. Pair it with a potassium-carrying tomato or vegetable fertilizer, or switch to one as flowers appear.
When will I see results?
Slower than a nitrate-based feed, and that's by design. Soil microbes have to break the protein down first, so expect greener, fuller foliage over 2-3 weeks rather than in a few days, with the effect holding steadier between applications. Warm soil speeds conversion; cold soil slows it considerably, which is part of why the fall and winter schedule stretches to every 4 weeks.