Let us help you identify that insect!
Bring LIVE insects to the Henrico Extension Office for identification Monday through Friday during regular business hours (8:00 am to 4:30 pm).
You can also visit the Insect Identification Laboratory at Virginia Tech. And for more information, visit the VCE Insect & Pests Publications.
Integrated Pest Management (IPM) uses a combination of techniques to keep pests from ruining your garden and landscape. The basic steps include prevention, monitoring for pests and learning their biology, researching options for control, and implementing least toxic methods first to manage pest populations.
Check out the Henrico Horticultural Corner for an overview of IPM.
For a more detailed explanation, go to History and Justification for IPM.
When will those annoying pests arrive to ravage your yard and garden? Check out the Growing Degree Days to find out!
Click here for updated Pest Management Guides:
Also visit the Virginia Pest Management Information Program.
Thinking of creating a wildlife habitat in your backyard?
Would you like to feed wild birds?
For answers, visit the Wildlife Factsheets!
2005 Emergence Dates for Common Pests in Henrico County
|2005 EMERGENCE DATE:||PEST:|
|May 14||Two Spotted Spider Mite|
|May 21||Azalea Whitefly (1st infestation)|
|June 15||Japanese Beetle|
|June 24||Azalea Whitefly (2nd infestation)|
|after July 10||Azalea Whitefly (3rd infestation)|
Insects, like plants and many other organisms, are dependent on temperature to develop. During warm years, insects develop faster and become problems sooner. During cooler years, development is slowed down. Problems from ornamental plant pests may be noticed weeks later in a cool year than in a warm year.
The Growing Degree-Day (GDD) method for estimating when insects will emerge is based on the average daily temperature. It is therefore a more accurate method for timing pest management strategies (spraying pesticides, etc.). The easiest way to calculate GDD is to average the daily maximum and minimum temperatures and then subtract the base temperature as follows:
((Maximum Temperature + Minimum Temperature) / 2) – Base Temperature = Daily GDD
For each day that the average daily temperature is one degree above the base temperature, one "degree-day" accumulates. (For most situations, a base temperature of 50 degrees Fahrenheit is used.)
Specific pests emerge as the degree-days add up. For example:
|Aphid||GDD - 135|
|Two Spotted Spider Mite||GDD - 363|
|Azalea Whitefly (1st infestation)||GDD - 448|
|Japanese Beetle||GDD - 1029|
|Azalea Whitefly (2nd infestation)||GDD - 1250|
|Azalea Whitefly (3rd infestation)||GDD - 2032|
For more information on Growing Degree-Days, please visit http://ccesuffolk.org/growing-degree-days-gdd/