The Dr Forest blog · Est. Stockport · England · 2020
Evidence-led guides to organic fertiliser, feeding and soil science for UK growers. Deficiencies, ingredients, biostimulants and crop-by-crop feeding, with every claim checked against the original paper.
Featured guide · Crop guides
Three choices decide your tomato crop before you pick up a bag: organic or mineral, dry or liquid, tomato-specific or all-purpose. A science-led, honest guide to each, from the founder of Dr Forest.
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Plate 01
animal-free plant food · Guide
Most organic plant foods are built from fish, blood and bone. A vegan feed leaves the animal content out and supplies the same nutrients from plant...
application rate · Guide
How to apply fulvic acid as a foliar spray, soil drench and seed soak, with the peer-reviewed dose data behind every rate. Plus the hormesis rule...
foliar feeding · Guide
Pour water onto dry compost and a lot of it runs straight out the bottom, leaving the middle dry as a bone. A wetting agent lowers...
Ascophyllum nodosum · Guide
Seaweed fertiliser is a biostimulant, not a feed — its value is in the bioactive fraction, not its tiny NPK. Here's what it does, the three...
chloride-free potash · Guide
Two of the cleanest potash options a UK gardener can buy. They look similar on the label, behave very differently in the soil, and answer different...
amino acids · Guide
Amino acids are pre-assembled nitrogen the plant can absorb and use without spending energy on synthesis. What the evidence supports, how enzymatic and chemical hydrolysates differ,...
biostimulant · Guide
Eight specific benefits of fulvic acid for plants, each with peer-reviewed evidence. Plus what the field-trial data actually shows for lawns, flowers, fruit and vegetables, and...
biostimulant · Guide
The smallest, most active fraction of the dark humus in healthy soil, and the part that actually gets inside the plant. What fulvic acid is, where...
The garden journal
One letter a month on what to feed, when to feed it, and why it works. Written by Joe, for growers who want to understand their soil.
