Want to learn more about plants?
Explore our easy-to-read educational Blog
Signs of damage
- The first sign is the yellowing of only one or two leaves;
- After, you will notice more and more spots and their change in color;
- The masses, which are rust-colored pustules, appear on the underside of the leaves;
- During the final stage of the disease development, you will notice discoloring of the tops of the leaves.
How to prevent
First and foremost, you can avoid the appearance of rust by choosing certain types of daylilies that are not prone to the disease. This dangerous fungal disease can also be prevented by treating the plant with fungicides.
Rust spores develop to the infective stage in high humidity, so you should definitely avoid such conditions if possible. The temperature suitable for developing this disease must be 40 to 90 °F (4 to 32 °C) for five to six hours, and the leaf must remain moist. Avoid overhead watering of the plant’s beds. Water the day lily at the soil level whenever possible to avoid this fungal problem and many others.
Rust on daylilies usually occurs on older leaves that you should remove and obligatory dispose of. After you get rid of the infected leaves, carry out a fungicide treatment in two weeks. The combustion of these two methods is the only effective method of daylily rust treatment.
Go Premium to continue reading
Also you’ll get unlimited access to disease identification and all the other beneficial features