Tag Archives: Diseases

Lavender Crop Update – Winterkill and Pest Update – May 22, 2026

Posted on May 22, 2026 by Sean Westerveld

Winterkill By now, lavender plants should have fully greened up. If the outer portions of the canopy are still brown, the plant will only recover if new shoots are now visible lower on the branches or near the crown. Green-up … Continue reading →

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Ginseng Crop Update – Frost and Pests – May 22, 2026

Posted on May 22, 2026 by Sean Westerveld

Weather, Frost and Disease Some areas have experienced frost damage, mostly during last week’s frost events. Most of the damage is confined to field edges and low areas. We used to think that damage along field edges was due to … Continue reading →

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Managing Basil Downy Mildew with Resistant Cultivars

Posted on April 28, 2026 by Sean Westerveld

Basil downy mildew was first identified in Ontario in 2010 and caused devastating losses in the first few years after its introduction (Figure 1). The disease often shows up in Ontario in late July or early August, and once in … Continue reading →

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Ginseng Crop Update – Early Season Pest Control – April 24, 2026

Posted on April 24, 2026 by Sean Westerveld

Temperatures have continued to be above normal despite the cool down earlier this week. As of April 23, we have accumulated 156 GDD (base 5), which is normally reached on May 6. Based on the current forecast, crop progress may … Continue reading →

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Ginseng Crop Update – Spring Emergence and Product Updates – April 12, 2026

Posted on April 13, 2026 by Sean Westerveld

This is the first crop update of the 2026 growing season. Emergence and Growing Degree Days Accumulated Growing Degree Days (Base 5°C) at Delhi up to April 12 are 5 days ahead of the 25-year average, which suggests crop emergence … Continue reading →

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Kenja® Fungicide label expanded via Minor Use Program to help manage Cylindrocarpon root rot on Ginseng in Canada

Posted on February 4, 2026 by Sean Westerveld

By Josh Mosiondz, Minor Use Coordinator, OMAFA The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use label expansion registration for Kenja® Fungicide for control cylindrocarpon root rot in Canada. Kenja® Fungicide was already labeled for … Continue reading →

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