Tag Archives: weather

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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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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Lavender Crop Update – Adjusting to a Warm Spring – May 3, 2024

Posted on May 3, 2024 by Sean Westerveld

The warm weather over the past week has put us about 10 days ahead of normal based on Growing Degree Days in the south (Figure 1). Figure 1. A lavender plant on May 3 in Simcoe showing significant green-up and … 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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Hot Weather Impact on Plant Water Demand – How Can We Measure?

Posted on July 6, 2022 by Sean Westerveld

By: Rebecca Shortt, Water Quantity Engineer, OMAFRA It has been hot and dry in SW Ontario in June. What is the impact on plants? And how do we measure the water demand? One thing I think we forget is that … Continue reading →

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Collecting Accurate Weather Data for Ginseng Production

Posted on May 25, 2020 by Sean Westerveld

Weather monitoring is important for understanding crop conditions, determining the timing of pesticide application, and deciding whether previous pesticide applications were effective. However, it is important to understand how weather conditions should be monitored so the information is accurate and … Continue reading →

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