The organic advantage

Why choose organic fertiliser?

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Synthetic feed gives a plant a fast hit and little else. Organic feed builds living soil that does most of the feeding for you.

Synthetic fertilisers are soluble salts. Water them in and a plant has nitrogen within hours, but much of what it can't grab quickly leaches past the roots or drifts off into the air.

Organic feeds work differently. They're plant proteins, seaweed and rock minerals that soil microbes break down gradually, releasing nutrients roughly in step with how fast plants are growing. You feed the soil, and the soil meters the feed out.

Organic vs synthetic fertiliser: a steady supply, not a spike

The whole point of organic feeding is steadiness. Where a synthetic feed gives one soluble surge that plants take up fast and rain washes away, organic fertiliser releases low and even across the season.

The long-running Swiss DOK trial put a number on the wider payoff: over 21 years, the organic plots ran on roughly a third to a half less fertiliser and energy, with far more soil life, while yielding only about a fifth less (Mäder et al., 2002).

How nutrients become available

A spike you mostly lose, or a steady supply you keep

Soluble feed peaks fast then drops away as it leaches; organic feed releases lower and longer as microbes work.

Stronger flavour, better fragrance

This is where home growers notice the difference on the plate. The biggest review of its kind, a meta-analysis of 343 studies, found organically grown crops carried higher levels of antioxidant compounds, the polyphenols behind much of a crop's colour and flavour, up to 69% more depending on the compound (Barański et al., 2014).

Fragrance follows the same logic. Steady, balanced nutrition lets a plant build the aromatic oils that scent a rose or a basil leaf, where a flush of soluble nitrogen tends to push leaf instead. The fragrance evidence is thinner than the antioxidant data, so treat it as a fair expectation rather than a promise.

Growing for the plate? Tomato 3-4-6 is the blend we built flavour-first, for heavier trusses and richer fruit.

No scorch, no chemical runoff

Synthetic feeds are soluble salts: overdo them and they scorch foliage and roots, and whatever the plant can't take up quickly washes straight past into groundwater. Dr Forest feeds carry no synthetic salts and no chemical coatings, so there's nothing to scorch and far less to leach away.

Because the nutrients are bound up in organic matter and released slowly, the feed stays where you put it and works with the soil rather than flushing through it.

Feeding the whole garden? All-Purpose 6-6-6 covers beds, borders and pots in one balanced bag.

Living soil that gets better every year

The strongest long-term case for organic feeding is what it does to the ground itself. A review weighing up forty years of research found organic systems store more soil carbon, hold water better and build fertility over time, where heavily mineral-fed soils tend to lose structure (Reganold & Wachter, 2016).

A big part of that is underground partnership: mycorrhizal fungi can supply a large share of a plant's nitrogen and phosphorus when the soil biology is healthy (van der Heijden et al., 2015). In a pot or a bed, it turns up as soil you water less, amend less and dig more easily each year.

The principle behind every blend we make is simple: feed the soil, and healthy soil feeds the plant.

Where mined minerals fit

Organic growing has never meant plants alone. Naturally occurring rock minerals, used as they come out of the ground rather than made in a factory, have always had a place in organic systems. Plant meals are generous with nitrogen but lighter on potassium, calcium, magnesium and sulphur, and slow-dissolving minerals close that gap.

It's why several of our blends carry Yorkshire polyhalite, a single crystal mined deep beneath the North Yorkshire coast that holds four nutrients in one: potassium, calcium, magnesium and sulphur. It dissolves slowly, so it feeds at the same steady pace as the rest of the blend, and gypsum does a similar job for calcium and sulphur without shifting soil pH. If you're curious about the geology, we've written up what polyhalite is and why Wimbledon's courts use it.

Why Dr Forest

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