Pine Needle Scale Forecast

Pine needle scale is a native pest that affects ornamental pines and Christmas tree plantations.

Pine Needle Scale Current Day Forecast

Pine Needle Scale Six-Day Forecast

WHAT ARE PHENO FORECASTS?

Pheno Forecast maps predict key life cycle stages in invasive and pest species, to improve management efficacy.  For insect pest species, Pheno Forecasts are based on published growing degree day (GDD) thresholds for key points in species life cycles. These key points typically represent life cycle stages when management actions are most effective. These maps are updated daily and available 6 days in the future.

Help us improve these maps! Our Pheno Forecast map products are still in development, and we seek input on their performance in your area. Give your feedback at the bottom of the page.


Credits: Pennsylvania Department of Conservation and Natural Resources - Forestry via Bugwood.org
Image
Adult pine needle scale insect is shown on a leaf.

SPECIES BACKGROUND

Native to North America, pine needle scale (Chionaspis pinifoliae) specializes on pine trees. They pierce pine needles and consume sap. Females overwinter with their eggs, under a waxy covering. Crawlers emerge from the eggs in late spring the following year.


Credits: Howard Russell, MSU Diagnostic Services
Image
Pine needle scale crawlers are show, they are oval dark shapes on a green pine needle (highly magnified).

CRAWLER FORECAST

We forecast crawler emergence based on growing degree days. Treatments are often applied when crawlers first emerge from their eggs and before they grow their protective waxy coating. For specific information on preferred treatment options in your region, we recommend contacting your local extension agent.  Additional treatment resources are available through Penn State Extension and Colorado State University Extension.


EXPLORE THIS FORECAST

Learn more about this forecast using our visualization tool!

Phenophase

GDD threshold

Base temp

Start date

GDD method

Model origin

Source

Crawler emergence

298-448oF

50oF

March 1

Simple average

NY

Cornell 2010 

More information on map development and re-use policy.

TRACK THIS SPECIES WITH NATURE'S NOTEBOOK

 

You can help verify this forecast by checking trees for this species and reporting your findings in Nature’s Notebook via the Pest Patrol campaign. Your observations will help scientists better understand when this species is active and susceptible to treatment.

 

Learn more about Pest Patrol

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Give us your feedback on our Pheno Forecast maps

Have you used our Pheno Forecast maps to plan treatment activities, or to know when to search for pests of interest? Do you have a suggestion of another species for which a forecast would help you make decisions? We'd love to hear about it!

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