Marigold Flower Leaves Turning Purple. Dwarf types of marigolds tend to be injured more severely than taller ones. Generally the mildew that attacks marigolds will not affect other plants.
Generally the mildew that attacks marigolds will not affect other plants. Some leafhoppers spread virus diseases such as aster yellows. 14102009 The mildew tends to develop in prolonged periods of high humidity.
Within a day or two the leaves start turning purple sometimes a lot sometimes a bit.
Some leafhoppers spread virus diseases such as aster yellows. The plant is using energy to keep them blooming. Leaves Turning Reddish Purple in Color. Once it feels better it will reward you with a new and more profuse crop.