There are several tools we use to track their movements, including the PVC pitfall traps located around the course, soap flushes to bring them to the surface, and on-line assistance from other area courses who are monitoring weevils.
One additional method we use is a phenological indicator. Typically, when Forsythia are half gold-half green, adult weevils are on the move. So, if it's been cold, and Forsythia bloom is late, so too will the weevil movement. Conversely, if we've had a warm early spring and the flowers are blooming early, it's generally safe to assume that weevils will be ahead of schedule.
|Looks like it may time to go on the warpath for weevils.|