UK gardening expert warns of risks to potted plants from heavy rainfallA gardening expert has warned Brits that leaving potted plants on the ground during storms could suffocate the roots and lead to severe damage or even kill the plantsView 3 Images Potted plants could become waterlogged if they are unable to drain properly during heavy rainfall (Image: GETTY)The UK is experiencing a return to wet weather, but while many gardeners might think this is good for their plants, one expert has sounded the alarm. This is especially true for those with potted plants or containers, as leaving these on the ground during storms could suffocate the roots and cause severe damage or even kill the plants. ‌Josh Novell, a gardening expert at Polhill Garden Centre, has cautioned that rain isn't as benign for some plants as people assume. Waterlogged soil blocks oxygen, nutrients can't reach roots, and plants become prone to fungal diseases like root rot, powdery mildew, and leaf spot. The expert added: "Many gardeners instinctively cover plants to protect them from heavy rain, but this can backfire.