Hygiene

Seeds germinate and grow most successfully in warm, moist conditions; unfortunately, these are precisely the same conditions that encourage the development of fungal diseases.

To reduce the risk of exposing young plants to infection, it is vital to ensure that all propagating equipment is kept clean and sterilised. Tools and benches should be wiped down periodically with a mild disinfectant and all fallen leaves or other debris removed immediately. Seed trays and propagators should be sterilised before use, and compost should always be fresh and sterile.

Fungicidal solutions such as Cheshunt compound may also be applied to protect seedlings further. Make sure that you follow the manufacturer's directions closely.

Seedlings may also be at risk from fungal diseases if they become too moist or overcrowded. This is known as 'damping off', where the roots darken and die and the seedling collapses. This can be avoided by pricking out the seedlings to stop them from becoming overcrowded, maintaining the correct moisture levels and ensuring that there is an adequate air flow above and around the plants.