Leeks
There are roughly 30 acres of leeks grown in New York annually. They are an edible member of the Liliaceae or lily family. They are tender and have a mild onion flavor with a slightly sweet edge. Leeks may be planted in late February to March for harvest in early- to mid-summer. Alternatively, they may be planted in July for harvest in late fall/early winter.Leek is an expensive crop to grow, because it is labor intensive. Hand labor is required for all stages of production including: transplanting, weeding, harvesting, washing and packing.
Information on cultural practices and pests of leeks can be found in the Leek Pest Management Strategic Plan.
Relevant Events
Lake Erie Region Summer Meeting
July 24, 2025
Brant, NY
Vegetable Pest and Cultural Management Field Meeting for Auction Growers -- Seneca Produce Auction
July 30, 2025
Romulus, NY
Niagara Region Summer Meeting, 2025
August 7, 2025
Ransomville, NY
A New Pest for the New Year in Western NY: Allium Leafminer is Here to Stay
Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program
In the fall of 2023, Allium leafminer (ALM) decimated leek crops in Orleans, Genesee, and Niagara Counties in New York. After its first detection in North America near Lancaster, PA in 2015, this invasive insect pest originating from Europe quickly established itself in southeastern New York, New Jersey, western Massachusetts, Delaware and Connecticut. It was only a matter of time that it would become established throughout New York. We are now assuming that ALM will occur throughout the 14-county Cornell Vegetable Program region in 2024. And, unfortunately, it is here to stay. Here is what Allium growers need to know.
Video: New York State Produce Auctions
Currently, there are 8 produce auctions in New York State. These auctions are aggregation points that allow local farmers to sell their produce in wholesale lots to buyers from across the region. To document the economic impact of produce auctions on agriculture, local businesses, family farms, and produce buyers, the Cornell Vegetable Program worked with Harvest New York to survey top sellers and buyers.
A new Cornell Vegetable Program video shares general information about produce auctions, how buyers and sellers use the auctions to expand their businesses, and how local communities benefit from them.
Crop Cooling and Storage
Robert Hadad, Extension Vegetable Specialist
Cornell Vegetable Program
On-Farm Cold Storage of Fall-Harvested Fruit and Vegetable Crops is an in-depth look at the planning and designing cooling for late season and winter storage but it also is useful for general cooling as well. This was written by Scott Sanford, Distinguished Outreach Specialist, UW-Extension, and John Hendrickson, Outreach Program Manager, Center for Integrated Agricultural Systems, University of Wisconsin-Madison.
Video: Farm Food Safety as if Someone's Life Depended On It
Robert Hadad, Extension Vegetable Specialist
Cornell Vegetable Program
This video is an overview of Good Agricultural Practices (GAPs) through on-farm risk assessment. Cornell Cooperative Extension, along with the National GAPs Program and the New York State Department of Agriculture and Markets, has developed and implemented a nationally-recognized training program in GAPs to prepare New York growers for the marketplace's increased vigilance in food safety. You can learn more about that program through this video, as well as updates on the Food Safety Modernization Act (FSMA), and economic information on the implementation of GAPs collected from growers through extensive interviews.
Extending the Harvest Season with Fall Production
Robert Hadad, Extension Vegetable Specialist
Cornell Vegetable Program
Late season production starts in mid spring. For a successful crop, start with a detailed plan. Designate an area specific for late season production so that management can take place in one spot rather than all over the farm. This will make cultivation, pest management, using row cover, and harvesting more efficient to manage.
Leek Moth Control and Information
Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program
Leek Moth was detected in four home gardens in Plattsburg, NY in 2009. It was first detected in Ontario, Canada in 1997 where it has become problematic especially to small-scale, organic growers in eastern Ontario and to commercial producers in western Quebec, who have limited insecticides available to them.
Leek Moth continues its spread to more farms and gardens across the U.S., a new comprehensive website is available to aid in the identification and management of this pest. This Cornell website features maps of the distribution of leek moth, protocols on insect monitoring and identification, best management practices for farms and home gardens, a photo gallery of damage symptoms and a comprehensive resource section.
Visit the Leek Moth website.
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Upcoming Events
Lake Erie Region Summer Meeting
July 24, 2025
Brant, NY
This meeting will cover organic and conventional management and will be relevant for producers of all sizes. This broad-reaching meeting will feature a mixed fresh market field walk, potatoes, sprayer calibration, and disease control in table and wine grapes. We'll cover organic and conventional controls and present information for growers of all scales of production.
2.0 DEC (0.5 CORE, 1.0 Veg, 0.5 Fruit)
Vegetable Pest and Cultural Management Field Meeting for Auction Growers -- Seneca Produce Auction
July 30, 2025
Romulus, NY
This evening meeting will demonstrate pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options. Details on each topic will focus on field observations at the farm.
2.0 DEC credits in categories 10, 1a, 23, and 24.
Niagara Region Summer Meeting, 2025
August 7, 2025
Ransomville, NY
We're in for a treat! Professor Steve Reiners is coming as a part of his pre-retirement speaking tour! Steve's a fantastic, down-to-earth speaker with extensive knowledge on horticultural techniques, fertility, varieties, and much more. Don't miss this event! Topics include "what exactly do NPK and other nutrients do inside the plants?", a pest/disease field walk, sweet corn variety trial, a tar spot primer, spraying best practices, and industry updates. Content will be relevant for organic, CNG, and conventional growers.
DEC credits requested.