At the base of the Daylily plant, outer leaves which formed early in the year become yellow-brown. This is normal ageing, or senescence. New green leaves grow continuously from the center of each Daylily fan.
( 'Stella De Oro' in late August ).
This is a leaf disease of the Daylily which has spread rapidly through much of the United States. Although not fatal to the plant, it can cause serious yellowing of the Daylily foliage resulting in a very unsightly plant. (No photo available).
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Bloomingfields Farm
Aureobasidium microstictum is a universally seen Daylily leaf disease which characteristically enters the midrib of a Dayily leaf and spreads along it creating a yellow, then brown, streak. Somewhat disfiguring, but present everywhere. Several fully senescent, or dead, leaves are at the right. ( 'Stella De Oro' in late August ).
A sharp bend in a Daylily leaf, or a cut, allows various bacteria and fungi to enter the leaf and cause discolorations due to dying leaf tissue. In the center of the photo there is also a good example of Daylily Leaf Streak.
( 'Stella De Oro' in late August ).
During the first half of the year very few Daylily leaves will become infected and discolored in any way. At the base of this Daylily clump can be seen one or two senescent leaves. ( 'Fall Fancy' in midsummer ).
