Impatiens desease - Knowledgebase Question

Stuart, FL (Zone 10)
Question by taiko1997
January 18, 2007
My Impatiens die overnight. Is it fungus, cut worms, or white flies that I see a lot of? The stems just drop of and the base is dried, like it has been sucked dried. I keep them moist and have used some miled insecticide like oil,soap, baking soda. The year prior they grew beautifully. Help!


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Answer from NGA
January 18, 2007

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You may be dealing with verticillium wilt, a fungal disease. Vascular wilt is a troublesome disease of impatiens, especially in beds that have been planted to impatiens for many years. Control of this disease is difficult since the pathogen is commonly found in soil. One of the key strategies for control of vascular wilts is prevention. Therefore, it is important to avoid planting in infested soil. It is also helpful to maximize plant vigor by good cultural care and watering. Careful handling of plants will avoid root injury which enables the fungus to enter the plant. Since repeated use of the same area greatly increases the amount of disease, rotation is essential. When available, it is also helpful to use resistant varieties. Chemical controls are not effective for these fungi. I'd try planting them in a different bed for a year or two, or planting them in containers.

Best wishes with your impatiens!

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