Long Island Horticulture Conference

  • Thursday, March 9, 2023, 7:30 AM - 4:30 PM

At the forefront of Long Island horticulture for over 25 years...

We invite you to join us for the 33rd Annual Long Island Horticulture Conference! Landscapers, nursery growers, arborists, landscape architects and designers, turf managers, and others in the horticulture industry throughout Long Island and beyond are invited to attend.

For detail descriptions of each presentation, click on the brochure/mail-in form.


7:30-8:30 AM Sign-in/Refreshments

8:30-8:40Welcome and Announcements
Mina Vescera, CCE-Suffolk & Timothy Green, Brookhaven National Laboratory

8:40 – 9:10 NYSDEC Updates for Ornamental Horticulture
TBD, Bureau of Pesticides Management , NYS DEC Region 1

9:10 – 10:10 Tree injections
Don Grosman, PhD., Arborjet Inc., Woburn, MA

10:10 – 10:45 Vinnie's Top Ten Herbaceous Plants for Long Island Gardens
Vincent A. Simeone, Horticulture Director, Planting Fields Arboretum State Historic Park

10:45 – 11:00 SHORT BREAK with refreshments

11:00 – 12:00 PM Wild Hydrangea for the Mid-Atlantic Region
Sam Hoadley, Manager of Horticultural Research, Mt. Cuba Center, Delaware

12:00 – 1:00 PM LUNCH included with registration


1:00 – 2:00 Biopesticides in the Landscape
Amara Dunn, PhD., Biocontrol Specialist, New York State IPM Program

2:00 – 2:30 Nuts and Bolts and Crowns and Foliage:Little Turf Secrets for Big Results
Tamson Yeh, PhD., Turf & IPM Specialist, CCE-Suffolk

2:30 – 2:45 SHORT BREAK with refreshments

2:45 – 3:15 Vinnie's top 10 Trees and Shrubs for the Collectors Garden
Vincent A. Simeone, Horticulture Director, Planting Fields Arboretum State Historic Park

3:15 – 3:45 Diseases After Drought and Diseases After Rain
Margery Daughtrey, Senior Extension Associate, Cornell University

3:45 – 4:15 Next on the Agenda: Spotted Lanternfly
Dan Gilrein, Extension Entomologist, CCE-Suffolk

4:15 – 4:30 Adjourn and Distribution of CEUs


Please call Courtney Fenyo at 631-727-7850, x210 or email at to inquire if seating is still available or to be added to the wait list. No walk-ins are allowed on the day of the conference. Thank you for your cooperation.


Courtney Fenyo
AG Program Administrative Assistant


Brookhaven National Laboratory
William Floyd Parkway, County Road 46
Hamilton Seminar Room (Chemistry Dept., Bldg. 555)
Upton, NY 11973

Last updated March 8, 2023