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Author Archives: Sean Westerveld
Lavender Crop Update – Late Summer Tasks, August 27, 2025
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
Posted in Herbs, Lavender
Tagged Diseases, herbs, Insects, Irrigation, Lavender, Weed control, Weeds
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Best Sanitation Practices During Ginseng Seed Harvest, Processing, and Storage
Most ginseng growers harvest and store their own seed for their subsequent plantings. During the process, ginseng seed can be contaminated with pathogens that can rot the seed in storage and/or transmit pathogens to the new garden. It is important … Continue reading
Posted in Ginseng, Ginseng Pest Management, Ginseng Production
Tagged Diseases, Ginseng, Pest Management, Sanitation, Seed storage, seeds
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Ginseng Crop Update – Ginseng Leaf Folders are Re-Emerging – July 25, 2025
Given the more severe outbreaks of leaf folders (Zigzag Herpteogramma – Herpetogramma thestealis) over the past couple of years, we have been tracking their progress over the year to get a better understanding of their life cycle. This week, our … Continue reading
Lavender Crop Update – Bloom and Post-Bloom Considerations – July 18, 2025
Lavender is in full bloom across the province, and agritourism activities are in full swing. Angustifolia cultivars are nearing the end of bloom in the south, while lavandins are in the early bloom stage. This can cause lavender growers to … Continue reading
Ginseng Crop Update – Dealing with Heat – July 18, 2025
Although some cooler weather has temporarily arrived, we are currently experiencing a hot stretch that may continue again next week. Many areas have also been very dry, with only 43 mm of rain having fallen at the Delhi Weather Station … Continue reading
Posted in Ginseng, Ginseng Pest Management, Ginseng Production
Tagged Diseases, Fertility, Ginseng, Heat Stress, Insects, Pest Management
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Ginseng Crop Update – Pests – June 20, 2025
Alternaria After a prolonged cool and damp (but not wet) period, temperatures are about to rise dramatically. Combined with some frost damage and canopy stunting due to the long, cool period, this will greatly increase the risk of Alternaria leaf … Continue reading
Posted in Ginseng, Ginseng Pest Management
Tagged Diagnostics, Diseases, Ginseng, Insects, Pest Management
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