Soils have a natural characteristic called the cation exchange capacity (CEC) that allows them to hold (and exchange) cations (e.g., Ca+2 or Na+). These cations are held tight enough on the CEC that ...
We'll also teach you how to amend the soil you have so you can grow the plants you want. Depending on where you live, you're likely to have one of six different types of soil: loam, clay, sandy, silty ...
How to make sense of the UK's six soil types ...