How to Manage Pests
The UC Guide to Healthy Lawns
| | Index to contents | Acknowledgments | Related UC publications | References | |
Diagnosing problems on Kentucky bluegrass in fall
From "feeding on stems, crowns, roots, or leaves"
What are your symptoms?
 |
 |
 |
 |
| Grass is thin and dying; feeding damage present on crown, stems, and roots and whitish frass may be seen; turf is easy to pull up but does not roll back; presence of whitish legless grubs | Feeding damage present around crown; leaves are chewed and cut around the crown; presence of caterpillars that curl up when disturbed | Leaves chewed or missing; no feeding on roots; presence of caterpillars with distinct double row of black or brown spots down their backs at the base of bristles | Lawn feels spongy; feeding damage on roots; turf can be easily rolled back like a carpet; presence of white, C-shaped grubs with legs |