What pest is on our St. Teresa grape vine? - Ask Extension
What pest is on our St. Teresa grapevine and how do i get rid of it or manage it ?
Knowledgebase
What pest is on our St. Teresa grape vine? #875626
Asked July 02, 2024, 11:02 AM EDT
What pest is on our St. Teresa grapevine and how do i get rid of it or manage it ?
Larimer County Colorado
Expert Response
Hi Michele,
The photo gets a little too blurry, but this looks more like frass (insect poo) than a pest. Perhaps from caterpillars or grubs?
If you haven't spotted any adults, you can keep scouting. For now, just hose off these leaves.
The yellowish injury may be from leafhoppers or another insect that rasps at the leaf surface to get leaf juices. The insects are probably done and the damage was done earlier this year.
Overall, the grapes appear to be very healthy - and the good thing is that these plants have lots of leaves. Having a few that are damaged should not affect the overall health of the plant.
The photo gets a little too blurry, but this looks more like frass (insect poo) than a pest. Perhaps from caterpillars or grubs?
If you haven't spotted any adults, you can keep scouting. For now, just hose off these leaves.
The yellowish injury may be from leafhoppers or another insect that rasps at the leaf surface to get leaf juices. The insects are probably done and the damage was done earlier this year.
Overall, the grapes appear to be very healthy - and the good thing is that these plants have lots of leaves. Having a few that are damaged should not affect the overall health of the plant.
