The answer to 'why is my stone walkway dead trees' is that there are several common causes for dead plants or trees along a stone walkway. This could be due to issues with soil quality, drainage, or competition for resources with the walkway materials. Symptoms may include wilting, discoloration, or complete plant death.
To troubleshoot the issue, first inspect the soil around the affected plants. Poor soil quality or compaction can starve the roots of necessary nutrients and moisture. You may need to amend the soil or improve drainage to support healthy plant growth. Another possibility is that the stone walkway is preventing sufficient water and air circulation to the roots. In this case, you may need to create more space or adjust the walkway design to accommodate the plants.