Azaleas, with their magnificent display of blooms, are deciduous or evergreen shrubs that participate in the genus. 10,000 types and more than 800 species exist in most sizes. But these beautiful shrubs indicated by the look of spots on the leaves can be damaged by bugs. Mineral deficiencies can happen, but generally cause yellowing of the leaves.
Bugs, coated with brown and black dots and a netlike wing area that makes them seem lacelike, are a regular azalea pest. Measuring 1/8 to 1/4 inch-long, they prey on the cells, which in turn causes causes the yellow spots to to look on the upper surfaces As the injury increases, leaves become a gray that is blotched and, they turn brown as it worsens. Varnished- brown droppings that were showing seem on the undersides of leaves.
When azaleas are in a area, bugs seem most frequently. The best-practice would be to plant azaleas in places to prevent bugs. Generally, azaleas grow best in a moist soil as well as shade. Mulching helps keep roots awesome and the soil moist.
Bugs can be effectively treated by you in a number of ways. Spraying a powerful, somewhat soapy water from a sprayer connected to your hose will dislodge several nymph-phase bugs. Spraying insecticidal soaps and horticultural oils where the bugs feed, is still another alternative. Some pesticides that are easily accessible will also perform, but check the label to ensure bugs will be worked on by them. Monitor your azaleas to produce sure the bugs have not came back once handled. Re apply successful sprays if bugs come back.
Yellowing can happen for other factors on azaleas. Iron-deficiency, or chlorosis, causes whole leaves. This issue can be remedied by iron remedies. Cercospora leaf spot creates a halo above angular leaf spot and lesions begins as lesions which turn brownish. Nitrogen deficiency seems as a yellowing of the leaf that is whole. Zinc and manganese deficiencies present signs that are related.