Waterlogging and flooding
Few garden plants will survive waterlogging or flooding. Prolonged periods of sitting in soil saturated with water reduces the oxygen available to the roots and causes yellow leaves, root rot and death. However, conditions can be improved using various techniques to promote drainage and prevent damage.
Plants affected All except a few tolerant ones
Main causes Heavy rain combined with difficult soil conditions
Main symptoms Yellow leaves, rotting roots, stunted plant growth
Timing Winter and summer
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.