Since there are still nearly 5-weeks before the official start of summer, the accumulation of growing-degree-days (GDD) will continue to accelerate over the next several weeks. Many of our landscape insect pests will be rapidly emerging and be entering their best control windows before they potentially cause feeding symptoms. This writing contains part 1 of 2 parts of only a handful of the many late spring landscape insect pests that require monitoring. Some could more properly be called mid-spring pests, especially in southern NJ. Those included within part 1 of this blog are: Four-lined plant bug; Douglas-fir needle midge; Pine needle scale; & Elongate hemlock scale.
Landscape, Ornamentals, Nursery, and Turf Edition
Seasonal updates on ornamental, nursery, and turf pests.
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Rutgers Turf Blog - Articles on turfgrass diseases and cultural practices for the commercial turfgrass industry. Subscription available via RSS.
Rutgers Weather Forecasting - Meteorological Information important to commercial agriculture.
Letter from Secretary Fisher Regarding Governor’s Executive Order #241 Eliminating Requirement for Masks in Outdoor Spaces
On May 12, NJ Governor Murphy signed Executive Order #241 eliminating the requirement for wearing masks in outdoor spaces taking effect immediately. Secretary of Agriculture Douglas Fisher has summarized the changes that may impact agriculture operations. The full text of his letter can be read in this attached file.
It is time to put Bagworms on your radar in Southern NJ

Photo: Rich Buckley
Bagworms should begin hatching in the next 2-6 weeks throughout NJ, starting in the southern regions. Now is an optimal time to get this pest on your radar and prepare materials or approaches to attack first/second instar caterpillars. The control window for this pest is typically between 600-900 GDD50 (growing degree-days) and treatments should be in use prior to their mobile, airborne, “ballooning” phase. Check that the eggs have hatched prior to application of pesticides – as most compounds will not be effective at all if the first instar caterpillars are not present. Lethal pesticide doses are important, as sub-lethal doses can trigger early pupation, making the pest all but invincible to chemical or biological treatments.
Bagworm management – mechanical: If eggs have not hatched: hand-remove sacs/bags. Typically female/egg filled sacs are higher in the canopy so keep that in mind while scouting.
Treatment options for Lepidoptera (caterpillars) to have at the ready – containing: B.t. (Bacillus thuringiensis)(Dipel), spinosad (Entrust SC), bifenthrin (Talstar, UP-Star), cyfluthrin (Decathlon 20WP), carbaryl (Sevin SL), chlorantraniliprole (Acelepryn), cyclaniliprole (Sarisa), cyclaniliprole + flonicamid (Pradia), Lambda-cyhalothrin (Scimitar GC), cyantraniliprole (Mainspring), Indoxacarb(Provaunt)
IT IS CRITICAL TO ROTATE AS MUCH AS POSSIBLE BETWEEN IRAC GROUPS DUE TO THE NUMBER OF POTENTIAL APPLICATIONS
DISCLAIMER: The label is the law, always refer to it for allowable host crops, use-restrictions, application rates, reapplication intervals, re-entry intervals (REI), and mix compatibility information. Production and pesticide information on this site are for private/commercial pesticide applicators and landscape professionals only, and are NOT for home gardener use. Provided materials represent examples and do not cover all possible control scenarios. Trade-names listed do not imply endorsement and are used as examples only. Please contact your local agent or chemical sales representative for more information or to discuss additional pest management options.
More information on Bagworms:
Steve Rettke’s 2020 PPA Post – Bagworm caterpillars have hatched throughout most of NJ
Bagworms on Ornamental Landscape Plants
Photo Credits: Rich Buckley (Plant Diagnostics Laboratory) https://njaes.rutgers.edu/plant-diagnostic-lab/
Letter from Secretary Fisher Regarding Governor’s Executive Order #239 Easing of COVID-19 Restrictions
On May 12, NJ Governor Murphy signed Executive Order #239 regarding the easing of COVID-19 restrictions which will become effective on May 19. Secretary of Agriculture Douglas Fisher has summarized the changes that may impact agriculture operations. The full text of his letter can be read in this attached file.
Recordings of Webinar – Ask the Expert: Orchard Soil Fertility and Tree Nutiriton
Please use below links for the audio and video recordings of Webinar – Ask the Expert Series -V held on May 5th. The recording includes lively discussion on various aspects of orchard soil fertility and plant nutrition, including Q &A from growers, with, Dr. Robert Crassweller from PSU; and Dr. Joseph Heckman, Dr. Megan Muehlbauer and Dr. Hemant Gohil from Rutgers NJAES. Some of the information is also applicable to other crops. [Read more…]
Resuming In-Person RCE Programming – A Guide for Attendees
Rutgers Cooperative Extension has announced the resumption of in-person programming beginning this month. Extension professionals across all program areas have the option to offer in-person programming, limited at this time to outdoor events with no more than 25 total in attendance. This includes farm and field visits, twilight meetings, and pesticide applicator recertification events. Resuming in-person events doesn’t mean that online or hybrid events will end; both are essential tools for successful RCE programming.
These RCE guidelines and expectations are for all participants to follow to attend these events:
Voluntary Participation – Participation at in-person RCE activities is completely voluntary – there is no requirement for attendance.
Health Screening Form – Attendees will be required to bring a completed RCE Health Screening Form, which can be be accessed at https://go.rutgers.edu/RCE.healthform. Once completed, please take a screenshot of the big green checkmark or print out a copy to show when you arrive before being allowed to attend.
Face Masks – Every participant will be required to wear a face mask / covering over their mouth and nose at all times. Arrive wearing your mask, and make sure to keep it in place during the entire event.
Physical Distancing – Everyone will be required to practice physical distancing, staying at least 6 feet apart.
Hygiene & Sanitation – Everyone who attends is expected to practice good hygiene habits. Participants should wash or sanitize their hands when they arrive and before they leave, and as needed throughout the activity. You are encouraged to bring your own hand sanitizer to limit shared surfaces.
What to Bring With You – Food will not be provided and sharing food is not permitted. Make sure to bring your own refreshments, filled water bottle, tools/equipment, notebook and writing tool, camp chair, etc. depending on the event you’re attending.
All participants are expected to follow these rules and procedures to help make every RCE in-person event safe and enjoyable for everyone. Please be sure to check the NJAES Calendar of Events and the RCE office in your county for upcoming events.