Stachys macrantha produces spikes of hooded, 2-lipped, deep pinkish purple flowers on plants that slowly increase in width over time. This wild species collected by members of the Garden's staff from the Caucasus Region attracts butterflies and many different kinds of bees while repelling deer. The roots are tolerant of a poisonous exudate (extruded sap) produced by the root system of black walnut trees that impedes the growth of many species of plants. Plant in average soil in full sun and water the first year until the root system is established.