Sowing seeds indoors gives a faster and more reliable germination rate, particularly for runner beans. At the end of April sow a single bean seed, 4cm (1.5in) deep, in a 7.5cm (3in) pot filled ...

This often leads to plants becoming pot-bound, or root-bound, which refers to the plant's roots wrapping around each other multiple times until they become hard and cause the plant to become ...