It's mid-May, but my rose-of-sharon hasn't leafed out yet. Is it dead?
The rose-of-sharon (Hibiscus syriacus) can be successfully grown in the southern half of Iowa. (It’s hardy in USDA Hardiness Zones 5 to 9.) The rose-of-sharon leafs out late in spring. In Iowa, plants may not leaf out until late May or early June. Give the shrub a few more weeks. If it hasn’t leafed out by mid-June, it’s probably dead. Winter temperatures of -20 degrees Fahrenheit or lower can injure or destroy the shrub.