Should I test allotment soil pH?

Yes, a pH test is useful before planning a new vegetable plot or fruit planting, before adding lime, and when growth or leaf colour is disappointing. Follow the kit's sampling instructions so the result represents the bed rather than one small patch.

What pH tells you

Soil pH describes acidity and alkalinity. The RHS defines pH 7 as neutral, values below 7 as acid and values above 7 as alkaline. Different plants favour different ranges, and pH affects how available some nutrients are.

A simple home kit can give a useful indication. A laboratory analysis gives more detail when a persistent problem or major planting decision justifies it. Label samples by bed rather than mixing visibly different parts of a large plot into one result.

Test before changing the soil

The RHS warns that testing within three months of adding lime, fertiliser or organic matter may give a misleading result. Do not add lime merely because it is traditional allotment advice: test first, then match any change to the crop and result.