After analyzing the sample, the UGA Homeowner IPM Clinic can provide a specific treatment program. Unfortunately, landscape plants' chances of survival go down dramatically after three days under the water, Thomas said. Many shrubs won't make it, either. Consistent, daily removal of dying leaves may cut down on losses. Root damage to long-term exposure to water is usually fatal.
Recovery is very slow and survival over the winter unlikely.
Next spring, he said, you'll need to deep till those waterlogged beds to aerate the soil. A few plants may survive long periods under water, he said, most notably native woody plants that grow naturally in wetlands or stream beds. Perennials such as Iris pseudacoris, cannas, lythrum, columbines and phlox may also survive.