Mandevilla Problem - Knowledgebase Question

haverhill, ma
Question by nanaboo222
July 2, 2006
I have a mandevilla plant and the lower leaves just started turning black along the edges. Is this a fungus, or something else?

Answer from NGA
July 2, 2006


Fungal diseases usually occur during the warm and wet months of the summer. The diseases can spread rapidly when leaves are left wet overnight. Use an approved fungicide, such as Zyban as soon as spots are present. These diseases can spread to other plants quickly. Leaves will turn yellow with spots and fall off the plant after a few days. Removal of infected leaves and spraying with a fungicide and careful watering will stop the disease from spreading to other plants or to other leaves on the same plant.

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