New Downy Mildew Resistant Impatiens Cultivars

This article by Debbie Lonneeand appeared in the March/April 2020 issue of the Northern Gardener. Almost 10 years ago, northern gardeners witnessed an unusual disease attack classic garden impatiens, the best-selling shade-tolerant bedding plant. Infection caused the total collapse and, ultimately, death of plantings. It moved easily by wind and rain, and would lay dormant…

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