WNC Orchard Insect Pest Populations – May 27, 2025
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First generation codling moth remains a key pest of concern across the region. Also, the window for tufted apple bud moth control is open in all areas. A smattering of problems with stink bugs has been reported, and we will soon be approaching the time to begin monitoring for key indirect pests.
Codling moth: The degree-day model indicates that we are in the middle of first generation flight in Henderson County and approaching the end of flight in lower-elevation Cleveland County. If not monitoring for moths using traps and/or mating disruption, it should be assumed that insecticidal control is necessary in Henderson County at this time. In lower-elevation orchards, if an insecticide effective against codling moth has been applied in the past week, in most orchards that should be sufficient for the remainder of this generation. The exception is in those orchards with historically high codling moth populations.
Tufted apple bud moth: The ideal timing for an insecticide application to achieve season-long control of TABM is between about 800 and 1200 DD. TABM DD ranges from about 750 in Henderson County to 955 in Cleveland County, so this next application will provide ideal timing. Insecticides recommended for codling moth are also excellent against TABM (Altacor, Exirel, Verdepryn, Delegate). In areas where codling moth control is not needed, Intrepid at rates as low as 8 oz/acre will provide excellent TABM control.
Other Pests: In at least one orchard at a lower elevation, significant early season damage by brown marmorated stink bug was reported and confirmed. This was feeding by overwintering adults, which typically are not present in numbers high enough to inflict noticeable damage this early. This orchard is apparently in a BMSB hotspot.
Now is also a good time to begin monitoring for common indirect pests, including European red mite, potato leafhopper and green apple aphids.
Learn more about southeastern apple insect pests at the Apple Insect Management page.
2025 Average Weekly Trap Captures
| HENDERSON COUNTY | |||
| Insects per trap | |||
| May 12 | May 19 | May 27 | |
| Codling moth | 1.5 | 5.5 | 6.0 |
| Oriental fruit moth | 10.5 | 13.5 | 7.0 |
| Tufted apple bud moth | 48.0 | 42.0 | 70.0 |
| Redbanded leafroller | 0.0 | 0.0 | 2.0 |
| Obliquebanded leafroller | 2.0 | 5.0 | 2.0 |
| Lesser appleworm | 6.0 | 12.0 | 4.0 |
| Apple maggot (research orchards) | n/a | set | 0.0 |
| Apple maggot (abandoned orchard) | n/a | n/a | 3.0 |
| Brown marmorated stink bug (commercial) | 0.6 | n/a | 0.6 |
| Brown marmorated stink bug (unsprayed research orchard) | 0.3 | 1.0 | 0.3 |
| Spotted tentiform leafminer | 0.0 | 0.0 | 0.0 |
| Dogwood borer | 29.0 | 48.0 | 110.0 |
| Peachtree borer | 0.5 | 2.0 | 1.5 |
| Lesser peachtree borer | 9.0 | 63.0 | 20.5 |
| San Jose scale | 0.0 | 1.7 | 0.0 |
*Note that these averages illustrate only the timing of insect emergence and fluctuations in populations, and are not representative of population levels in any given orchard. The only way to have an accurate assessment of an individual orchard’s populations is to set up traps in that orchard.
2025 Accumulated Degree Days
| HENDERSON COUNTY | ||||
| May 12 | May 19 | May 27 | ||
| Codling moth (Biofix: April 21) | 263 | 391 | 502 | |
| Oriental fruit moth (Biofix: March 17) | 757 | 920 | 1069 | |
| Tufted apple bud moth (Biofix: April 14) | 435 | 598 | 747 | |
2025 Insect Population Trends
