Ascophyllum nodosum · Guide
Seaweed fertiliser: a biostimulant, not a feed
Seaweed fertiliser is a biostimulant, not a feed: its value is the bioactive fraction, not its tiny NPK. What it is, where it comes from, the...
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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Ingredients guides.
chloride-free potash · Guide
Polyhalite vs sulphate of potash: which to buy?
Clear pick for UK gardens: polyhalite for season-long K, Ca, Mg and S; sulphate of potash when fruit and flower need a fast hit. How to...
anaerobic fermentation · Guide
How to use bokashi bran: the mistake I see most
Bokashi bran is wheat bran inoculated with EM-1 microbes — sprinkle one to two tablespoons of Bokashi bran per kilo of food waste in a sealed...
alfalfa meal · Guide
What is alfalfa meal? Is it a good fertiliser?
Alfalfa meal is dried, milled lucerne sold as a slow-release organic fertiliser. What is actually in it, how slowly the nitrogen arrives in cold British soil,...
basalt · Guide
How volcanic rock dust works, and how slowly
Volcanic rock dust supplies silicon and over 60 trace minerals: the elements NPK fertilisers leave out. Here is the chef-and-soil-science case, plus the peer-reviewed evidence on...
boubly mine · Guide
What is polyhalite? 4 nutrients in one crystal
Polyhalite is a single mined crystal carrying potassium, calcium, magnesium and sulphur. Four nutrients from one scatter, low chloride, from the Boulby mine under the North...
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.