Overview

• Expert Josh Novell of Polhill Garden Centre warns that pots sitting on saturated ground can suffocate roots and invite fungal diseases such as root rot, powdery mildew and leaf spot.
• Raise containers by about two to three inches using bricks, plant stands or gravel and position them away from spots where rainwater pools.
• Check that drainage holes are clear before downpours, and consider a light mulch layer to reduce soil compaction from heavy rain.
• Use breathable covers if protection is needed, avoid trapping humidity, and stake tall or top‑heavy plants to reduce wind damage.
• After storms, inspect roots for early signs of waterlogging or rot, empty standing water from trays, and elevate containers promptly to aid drainage, noting that aquatic and bog plants like marsh marigolds and hostas are exceptions.