| Flower area affected | Level |
| None | 0 |
| Up to 5% | 1 |
| 6–10% | 2 |
| 11–20% | 3 |
| 21–50% | 4 |
| More than 50% | 5 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.