Tag Archives: Weeds

Lavender Crop Update – Late Summer Tasks, August 27, 2025

Posted on August 29, 2025 by Sean Westerveld

Irrigation Much of the summer has been hot and dry, a climate that lavender is used to. However, lavender in Ontario may have struggled with moisture stress because root systems are not as extensive as they are in the plant’s … Continue reading →

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Ginseng Crop Update – Phytophthora and Weed Management – August 30, 2023

Posted on August 30, 2023 by Sean Westerveld

Due to the heavy rains, especially in the northern and western portions of the ginseng-growing region, Phytophthora is the biggest issue in ginseng now. Most other pest issues have been relatively minor or highly localized this year. Now is also … Continue reading →

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Resistant Weed Testing is Available for the 2023 Field Season

Posted on April 27, 2023 by Sean Westerveld

By: Kristen Obeid, OMAFRA Weed Management Specialist Resistant weeds are becoming the new norm in weed management for many Ontario farmers.  This is a reminder that genomic resistant weed testing will be available again at no cost to the grower … Continue reading →

Posted in All Specialty Crops, Culinary, Ginseng, Ginseng Pest Management, Herbs, Hops, Hops Pest Management, Industrial and Misc. Crops, Industrial Hemp, Specialty Fruit and Nuts, Specialty Grains, Specialty Vegetable Pest Management, Specialty Vegetables, Sweet Potato, Sweet Potato Pest Management | Tagged , , , , | Leave a comment

Ginseng Crop Update – Nitrogen Fertilization – June 17, 2022

Posted on June 17, 2022 by Sean Westerveld

The ginseng crop is progressing normally this year after several years of spring cold temperature and frost damage. This should reduce pressures of foliar diseases. As temperatures warm, the added stress could lead to higher Alternaria pressures over the next … Continue reading →

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Funding Available to Continue Testing Herbicide-Resistant Weeds

Posted on March 11, 2022 by Sean Westerveld

By: Kristen Obeid, OMAFRA Weed Management Specialist – Horticulture Funding is available for producers, agri-business, consultants and extension personnel to submit weed samples to be tested for herbicide resistance again this year.  Sample collection kits with sampling procedures can be … Continue reading →

Posted in All Specialty Crops, Ginseng, Ginseng Pest Management, Herbs, Hops, Industrial and Misc. Crops, Industrial Hemp, Specialty Fruit and Nuts, Specialty Grains, Specialty Vegetables, Sweet Potato | Tagged , , , , | Leave a comment

Control of Scentless Chamomile in Ginseng

Posted on October 19, 2021 by Sean Westerveld

Growers are reporting increasing issues dealing with scentless chamomile in ginseng, which has become a problem weed in many crops. Scentless chamomile (Matricaria perforata), also known as scentless mayweed, is a short-lived perennial or sometimes annual, closely resembling stinking mayweed, … Continue reading →

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