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Why are my Impatiens turning yellow and losing their leaves?

This year in early August, our beautiful Impatiens began turning yellow and lost their leaves. I applied a slug stopper. They are getting worse. Help!
Last Updated: Sep 27, 2012  |  1074 Views

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Did you see slugs? Generally, impatiens will do fine in shade with adequate water. They do not like to be in full sun and it's possible that they were OVER watered as plants need both water and oxygen to survive. You should be able to stay away from pesticides which can do more damage than good.

Gardeners in Pennsylvania are being plagued with a downy mildew problem with impatiens this year. According to  Annette MaCoy, Penn State horticulture educator "if your impatiens are infected, it’s too late to spray a fungicide to control the disease. Remove infected plants and fallen leaves. Researchers are not yet sure if this fungus overwinters in our region; but if you have had problems this year, it’s recommended to plant or interplant with alternative plants next year, such as New Guinea impatiens, which are highly resistant, begonias, or coleus."

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