Drainage is important and depending on soil type, raised beds may be necessary. The soil can be prepared in autumn by deep ploughing. Capsicum is generally grown as seedling and is then planted out when the risk of frost has passed. Seedlings from reputable nurseries are preferred to obtain plants that are well grown and free from diseases. Grow windbreak plants like ryecorn or sweetcorn in rows where there is a danger of wind damage. Application of fowl manure or compost, at least four weeks before planting, is recommended.
Capsicums can be cultivated in many types of soil but grow best on deep, loamy and well-drained soils. Soil pH should be in the range of 5.5 – 7.0. They can develop strong deep tap roots (> 1 m). Uniform slopes are desirable, as they facilitate drainage, but not essential. Depressions in the field can result in flooding.
Ideal growing conditions for peppers include a sunny position with warm loamy soil, ideally 21 to 29 °C, that is moist but not waterlogged. Extremely moist soils can cause seedlings to "damp-off" and reduce germination. The plants will tolerate (but not prefer) temperatures down to 12 °C and are sensitive to frost. Capsicum flowering is tightly connected to the length of daytime. The flowers can self-pollinate. However, at extremely high temperature (33 to 38 °C), pollen loses viability, and flowers are much less likely to pollinate successfully.