biostimulants · Guide
Humic acid benefits for plants
Eight peer-reviewed benefits of humic acid for plants, each with the trial behind it. What the field data shows by crop, and where the evidence is...
Allotment gifts for Christmas
Feed sets and gift cards growers actually use. Shop allotment gifts
The Dr Forest blog · Est. Stockport · England · 2020
Soil science & growing guides, properly explained.
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.
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Biostimulants guides.
biostimulants · Guide
How to apply humic acid: why more isn't better
How much humic acid to use and how to apply it: soil incorporation, root drench and foliar rates, timing through the season, and the common mistakes...
biostimulants · Guide
What is humic acid? The brown coal in the bag
Humic acid is the dark, alkali-soluble fraction of humus. What it is, where it comes from, what it does in soil and at the root, and...
biostimulants · Guide
Humic vs fulvic acid: which to buy for your soil
Humic and fulvic acid come from the same soil humus but do different jobs. The one-sentence difference, what each does with the evidence behind it, and...
application rate · Guide
How to apply fulvic acid: 0.5 to 1 g per litre
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...
amino acids · Guide
Amino acids for plants: how I use them
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
Fulvic acid benefits for plants: 8 trial results
Iron locked on chalk, thin roots in a tired grow bag, fruit marking even with calcium in the bag. What peer-reviewed fulvic trials actually show, and...
biostimulant · Guide
What is fulvic acid? A grower's one-line answer
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
Feeding schedules, soil science & 10% off your first order.
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.