25+ Brown Spots On Zinnia Leaves. The spots have grown with the leaves and gotten slightly worse. High humidity, overhead irrigation and close plant spacing promote long leaf wetness periods.
Alternaria Blight Of Zinnia from www.missouribotanicalgarden.org
Age spots, also known as liver spots or sunspots, are flat and mostly appear as irregularly shaped discolored patches of skin. They seem to get plenty of water and have an east facing exposure. This is a very common issue afflicting ornamental and shade trees and most of the time no action needs to be taken.
It was first reported in the u.s.
Age spots, also known as liver spots or sunspots, are flat and mostly appear as irregularly shaped discolored patches of skin. Why are zinnia leaves brown and wilting. Spots turn brown and angular and may have a yellow halo. Small, round reddish brown spots with white to gray centers form on the upper surface of the leaves and along the midrib.
