Organic feeding works from a different idea to a bottle of mineral salts. Instead of handing the plant finished nutrients, you feed the living biology in the root zone, and that biology breaks the food down and passes it to the roots. It is slower and more forgiving, and it is where a lot of the flavor and aroma in a crop comes from.

What "organic" actually means when you feed

A mineral feed delivers nitrogen, phosphorus and potassium in a form the roots take up straight away. An organic feed does not. It supplies raw materials, things like fish, kelp, bat guano, alfalfa and rock dusts, and relies on the bacteria, fungi and other life in your medium to break them down into a form the plant can absorb. You are feeding the soil food web, and a healthy web feeds the plant.

That changes how you should think about the reservoir. There is no instant EC number to chase, because the nutrients release over days as the biology works through them. This is why organics reward patience and a living medium, and why they are far harder to overdose than mineral salts: the buffer is built in. It also sits neatly alongside a mineral program. A mineral base run with organic additives is a common and sensible stack, giving you the repeatability of one and the character of the other.

Organic feeding works best when the whole program is built around it. This collection is part of our Nutrients & Additives guide, which covers how it fits the rest of your setup.

Where organics shine, and where they struggle

Organics are at their best in soil and coco, hand-watered or drain-to-waste, where the medium holds moisture and gives microbes somewhere to live. They are more forgiving of a heavy hand than mineral salts, and plenty of growers rate them for the flavor and aroma they build into a finished crop.

The trade-off is speed and control. Organic nutrients act slowly, so you cannot rescue a hungry plant in an afternoon the way you can by adjusting a mineral tank. Raw organic matter is also thick and full of solids, which clogs pumps, drippers and NFT film in recirculating hydro and can foul the reservoir. Keep true organics for hand-watered media. If you run recirculating hydroponics, either stay mineral or choose products formulated to stay in suspension, and lean on the hybrid approach, a mineral base plus organic additives, if you want that organic character without the maintenance headache.

Dry amendments, liquid feeds and the biology behind them

Organic products come in two broad shapes. Dry amendments are powders and meals you mix into the medium before planting or top-dress during the grow. Down To Earth and Mother Earth cover this end well, with single-ingredient meals and blended mixes that release over weeks and suit a top-dress or a living-soil build. Liquid organic feeds act faster and go in with your watering. Roots Organics, Earth Juice and Advanced Nutrients’ Iguana Juice sit here, ready-to-mix bottles for growers who want organic feeding without building a soil recipe from scratch.

None of it works without biology, so it pays to feed that directly. Mycorrhizal fungi colonize the roots and extend their reach for water and phosphorus, and bacterial and fungal inoculants get a young medium alive faster. A compost tea, brewed from good compost and a food source and aerated for a day, is the traditional way to multiply that life and drench it onto the roots. Advanced Nutrients’ Ancient Earth works on the same principle, feeding the microbes rather than the plant. Get the biology established and the rest of an organic program has something to work with.

Organic nutrients & amendments we stock

Frequently asked questions