Weed Control in Asparagus
Chuck Bornt, Team Leader, Extension Vegetable Specialist
Eastern New York Commercial Horticulture
If you haven't already done your pre-emergent herbicide treatments in your asparagus, it's getting that time! Rutgers University in New Jersey recommends 2.5 lb Solicam DF plus 1-2 lbs Karmex DF (do not apply more than 3 pounds per season), 14 days prior to spear emergence (that's the pre-harvest interval) which means applications need to be going out very soon if not immediately (for beds that are at least 1 year old)! This tank mix works on a wide range of pre-emergent broadleaves and grass weeds and is relatively safe to the asparagus. Both of these materials will not work on already growing weeds and also work better if moisture is received soon after application. If weeds are present, the addition of Gramoxone or other paraquat containing material will help control those weeds already established. The addition of Calisto at 3.0 ozs per acre can also improve residual and Common Larmbsquarter and horseweed (marestail or stickweed) control.
Weed Control in Asparagus (pdf; 141KB)
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Upcoming Events
Ag Labor Road Show IX
December 1, 2025 : Save the Date! - Ag Labor Roadshow Webinar 1
In addition to the in-person Ag Labor Roadshow program in our region on December 9, two webinars are scheduled for December 1 and December 22. Each webinar will focus on different program content that is different from the in-person sessions. These webinars are an added benefit to program registration.
December 9, 2025 : Save the Date - Ag Labor Road Show In-Person Event (Greenwich, NY)
Greenwich, NY
The Roadshow delivers essential updates on labor law, regulations, and workforce best practices—tailored for farm owners, managers, and ag service providers. Sessions also focus on practical strategies to boost communication, strengthen retention, and build a positive workplace culture.
The in-person session for Eastern NY is December 9 - Elks Lodge, Greenwich, NY - full day in person session
Additional in-person sessions are:
December 10 - Hilton Garden Inn, Watertown, NY, December 17 - Cornell AgriTech, Geneva, NY, December 18 - Genesee Community College, Batavia, NY
December 22, 2025 : Save the Date! - Ag Labor Roadshow Webinar 2
In addition to the in-person Ag Labor Roadshow program in our region on December 9, two webinars are scheduled for December 1 and December 22. Each webinar will focus on different program content that is different from the in-person sessions. These webinars are an added benefit to program registration.
How to Obtain a Pesticide Applicator License
December 17, 2025
Thinking about becoming a certified pesticide applicator in New York, but aren't sure where to start? Join DEC representative Kenneth Klubek for a discussion on who needs to become a certified pesticide applicator, certification types, examination procedures, and recertification. Participants will have ample opportunity to ask questions during the program.
2026 Winter Cut Flower Webinar Series
January 6, 2026 : Session 1: Cut Flower Cost Calculator Updates and Woody Cuts
Session 1: Cut Flower Cost Calculator Updates and Woody Cuts
January 13, 2026 : Session 2: Perennials and Industry Trends
Session 2: Perennials and Industry Trends
January 20, 2026 : Session 3: Anaerobic Soil Disinfestation and Biochar
Session 3: Anaerobic Soil Disinfestation and Biochar
January 27, 2026 : Session 4: Beneficial Insects and Propagation Techniques
Session 4: Beneficial Insects and Propagation Techniques
February 3, 2026 : Session 5: Fungal and Insect Pests and Market Trends
Session 5: Fungal and Insect Pests and Market Trends