How can I successfully revive my lavender plants that are not thriving?

To successfully revive lavender plants that are not thriving, consider the following steps:

1. Ensure they are planted in well-draining soil and receive plenty of sunlight.
2. Trim back any dead or overgrown branches.
3. Water them deeply but infrequently to prevent root rot.
4. Fertilize sparingly with a balanced fertilizer.
5. Monitor for pests and diseases and treat promptly.