what makes trees turn yellow and drop their leaves
Add berries for Christmas, and you have one of the most generous plants in the garden. Hollies--usually easy to care for--sometimes require a little TLC. Usually bright and green, holly leaves sometimes turn yellow, often signaling a cultural problem. Chlorosis, one of the more serious holly ailments, is often the cause of yellow leaves. Chlorosis shows itself on hollies by all-over leaf-yellowing. Leaves start to lose their deep green color and glossiness. The severity of chlorosis determines how yellow the leaves will become. Pale green coloring of leaves can last months or even a few years. Severe cases can turn leaves completely yellow and kill a holly in one season.