GardenCalc.uk · Free UK Field Guide 02
What to fill it with, in what mix — so things actually grow.
This topsoil-led mix is the reliable starting point for a veg bed — the same ratio our compost calculator uses. Add a couple of handfuls of grit per barrow if drainage is poor.
| The job | Do this |
|---|---|
| Improving a border | Fork 5–10cm of compost into the top of the existing soil — don't replace it |
| Pots & containers | Multipurpose + John Innes + a handful of grit for drainage |
| Mediterranean / alpine plants | Up the grit — they rot in rich, wet soil |
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