Nursery Update 4/30/24 -Boxwood blight, borers, flea beetles

Please note: The Rutgers Nursery and Green Industry Working Group is working to deliver regular pest and disease updates throughout the season. These will be in addition to important alerts, critical topics, and pesticide credit opportunities. This tool is made for you, the commercial agriculture business, so please let us know if there are particular topics you would like to see included in the regular update.

Email:  twaller@njaes.rutgers.edu Phone: 856-451-2800 Ext. 1.

Insect Pests

Projected GDD50 accumulation as of 4/30/2024
CODE Location 1-Apr 1-May 1-Jun 1-Jul 1-Aug
NJ50 Upper Deerfield (South) 47 237 696 1408 2308
D4116 Bridgeton (South) 45 172 632 1346 2243
KMIV Millville Airport (South) 57 249 676 1362 2237
NJ05 Greenwich (South) 53 247 716 1436 2338
NJ10 Howell (Central) 33 172 551 1191 2026
N59 High Point (North) 18 117 440 990 1711
USPEST.ORG – Model: simple average/growing degree-day, Min: 50F – Max: 95F, NMME forecast
Forecast:  7-month NMME based seasonal climate forecast (USPEST.ORG) – Subject to change regularly = Check Often

Please download and print the Rutgers Nursery and Landscape Pest Scouting Guide  or  Conifer and Christmas Tree Pest Scouting Guide and refer to this post “Obtaining your local growing degree-days (GDD)” for additional information.  (See pest scouting guides for complete list of references) 

Please SHARE what you SEE!! If you see a pest, disease, otherwise interesting or troublesome issue please report it to the Working Group by following the QR Code on the front of the Pest Scouting Guides or by filling out this reporting form.

Keep reading for more ALERTS – Boxwood Blight risk this week – Red-headed flea beetle timing, borer activity, and upcoming pests.

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