Troubleshooting Petunia Wilting Problems
Wilting petunia flowers can mean many things. Maybe the most common (and easily fixable) is improper watering. Like lots of plants, petunias respond to a lack of water by wilting. Don’t just water them more though! Wilting petunia flowers can also be a sign of too much water. Always check the soil around your petunias before watering–if the soil is still damp, don’t water it. Lack of sun can also lead to the wilting of petunias. Petunias prefer full sun and will produce the most flowers if they get it. They can survive in partial sun as long as they get five to six hours of direct light every day. If your petunias are in the shade, that might be your problem. Petunia wilting problems can also be a sign of insect or fungal issues:
Aphids, budworms, and slugs like to eat petunias, opening up sores in the leaves that allow disease in. Lead slugs away from your garden with bait. Spray for aphids and budworms if you see them. Certain diseases like white mold, gray mold, black root rot, and verticillium wilt can all lead to wilting leaves. Avoid disease by watering your petunias early in the morning so water doesn’t sit on the leaves and planting your petunias far enough apart to allow for good air circulation. If your petunias contract a fungal disease, remove the affected parts of the plant and apply a fungicide.
