Meanwhile, the combination of soaring temperatures and hosepipe bans have left many gardeners in fear of disaster for their beloved plants, flowers and lawns. So, how can you ensure your garden continues to thrive as Britain boils in its fourth heatwave of the year? Jo added: 'Water garden hydrangeas deeply at the base in the early morning or evening, rather than giving them small amounts throughout the day.' She recommends avoiding deep digging in hot, dry soil, as this can increase water loss and disturb plant roots. The flowers that need the most protectionAccording to Jo, 'Hydrangeas, acers, roses, ferns and fuchsias need more care during hot weather, especially if in pots or exposed positions.'