Category Archives: Ginseng Production

Ginseng Crop Update – Leaf Folders & Forecasting Frost Events – May 8, 2025

Posted on May 8, 2025 by Sean Westerveld

Time to Spray for Leaf Folders Last year, some growers saw an explosion of leaf folders that caused considerable damage. By the time growers noted the problem, it was too late to control them. This is because leaf folders, unlike … Continue reading →

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Ginseng Crop Update – April 23, 2025

Posted on April 23, 2025 by Sean Westerveld

Crop Update This is the first ginseng crop update of the 2025 growing season. Following a few winters in a row with well above average temperatures, this winter was relatively normal for both precipitation and temperature. Based on Growing Degree … Continue reading →

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Ginseng Crop Update – Phytophthora and Fertility After Heavy Rains – July 19, 2024

Posted on July 19, 2024 by Sean Westerveld

Heavy rains in the northern two-thirds of the growing area over the past week are by far the biggest issue in ginseng. Within the ginseng growing area bullseye for rain was the 402-401-403 corridor from Strathroy through to Brantford with … Continue reading →

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Comments on Frost Risk for Ginseng – May 30, 2024

Posted on May 30, 2024 by Sean Westerveld

Environmental Canada has issued a frost advisory for most of the ginseng production area for overnight tonight (May 30-31, 2024). Patchy frost is possible in the area. Here are some reminders on assessing the risk of frost in your area. … Continue reading →

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Ginseng Crop Update – May 16, 2024

Posted on May 16, 2024 by Sean Westerveld

The ginseng crop has fully emerged and canopies are expanding. We have accumulated 300 GDD (Base 5) so far this year as of May 15. Normally we don’t reach that level until May 25. The only year in which we … Continue reading →

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Ginseng Crop Update – April 26, 2024

Posted on April 26, 2024 by Sean Westerveld

So far this year, 130 growing degree days (GDD) have accumulated at Delhi, which is 7 days ahead of normal. The warm weather over the weekend will accelerate growth and by Tuesday, we will be back to 10-11 days ahead … Continue reading →

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