Author Archives: Sean Westerveld

About Sean Westerveld

Ginseng and Medicinal Herbs Specialist, OMAFRA

Ginseng Crop Update – Dealing with Cold Temperature Damage May 14, 2021

Although the past week was not nearly as cold as the same period last year, there has been an extended period of well below normal temperatures. When this has occurred during plant emergence in the past, development of the tops … Continue reading

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Assessing and Pruning Winterkill in Lavender

Since lavender is greening up across most of Ontario, now is a good time to assess lavender plants and determine the extent of winterkill. Depending on the severity of the damage, further action may be required in some cases such … Continue reading

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Pest Control Product Changes for Ginseng for the 2021 Growing Season

With a new season beginning, growers are starting to apply products for disease control on ginseng. Here are the changes in pest control products since last spring. Nematode Control Velum Prime (fluopyram) is now registered for control of soil dwelling/root … Continue reading

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Snow and Freeze Impacts on Ginseng and Lavender

Snow and cold temperatures are in the forecast for much of Southern Ontario Tuesday and Wednesday nights. Both ginseng and lavender growers have the option to employ row covers to protect tender plants in the spring. Here are things to … Continue reading

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New Episode of the What’s Growing ON Podcast

In the latest episode of the What’s Growing ON podcast, OMAFRA Horticulture IPM Specialists, Wendy McFadden-Smith (tender fruit and grape) and Melanie Filotas (specialty crops) talk about the importance of regular pest scouting, from how often and how much to … Continue reading

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Is It Time to Take Off Row Covers in Lavender?

One of the big questions lavender growers face annually is when to take their row covers off. Row covers have proven effective at protecting sensitive cultivars over the winter, but it can be difficult to know when to put them … Continue reading

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