by Mary Free and Christa Watters, Extension Master Gardeners
Catkins/aments are inflorescences in the form of racemes or spikes. Some have described them as furry clusters or cylindrical structures of tiny leaves and apetalous flowers on a central stalk. Catkins are unisexual and can appear on monoecious species, which bear both male and female flowers as separate structures on the same plant or dioecious species that bear male and female flowers on separate plants.
You are sure to recognize those—mostly male—that dangle from trees like birches, hickories, hornbeams, oaks, walnuts, and willows in spring; but did you know that female catkins are usually less conspicuous and often stand more or less upright on branches? Learn more here.
