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Soil with a pH above 7 that produces a blue reaction when in contact with universal indicator solution (see pH). Alkaline soils are suitable for growing a wide range of plants, with the exception of those that are ericaceous or calcifuge (lime-hating).
A soil that has a high activity of hydrogen ions, which gives the soil a pH value below 7 and produces a yellow, orange or red reaction when in contact with universal indicator solution (see pH). Acid soils are suitable for growing ericaceous
A plant that favours chalky or calcareous soils.
Plants that grow in the soil, land plants.
A chemical trace element found in soil.
A plant that cannot tolerate alkaline soil. Described as ericaceous, calcifuges grown on alkaline soils will exhibit symptoms of iron deficiency.
Low-growing, fast-spreading plants often used to stabilise soil and prevent soil erosion, as well as for aesthetic interest.
Decomposed organic matter that provides nutrients for plants and increases the soil's ability to retain water. Humus can be mixed with garden soil and sand to make a potting mixture.
The practice of improving soil, by adding a layer of fertiliser to the surface and allowing it to settle in without digging over. Replacing the top layer of soil with compost.
To loosen soil in order to relieve compaction, allowing improved drainage and movement of air.