Examples of SOLEMN. 1  He spoke in a solemn and thoughtful manner. 2  He wore a very solemn expression on his face. 3  He recited the poem in a solemn voice. 4  A solemn crowd gathered around the grave.
Rust on hollyhocks is caused by the fungal pathogen Puccinia malvacearum and impacts hollyhock leaves and stems. This fungus first appears on leaves as yellow, circular spots about 1/8 inch wide. These yellow spots enlarge and swellings develop on leaf undersides.
1 Light: Hibiscus are full-sun plants. Lack of sunlight can cause overall yellowing of the leaves. On the other hand, if the plant is getting sunburned, the leaves can get yellow or white splotches.  Insect Infestation: Spider mites and aphids are two major pests of hibiscus that can cause leaf damage and discoloration.