This tall dioecious annual herb has been widely cultivated in eastern states for various uses since the early period of settlement. Short & Peter (1835) noted: "Hemp has long been cultivated in the Elkhorn country around Lexington, and the exuberant fertility of the soil of this district is admirably suited to its culture. Owing to these circumstances it has become partially naturalized, and we have met with it in secluded situations, miles distant from any scene of cultivation." Such waifs have dwindled greatly in recent decades. Records mapped here are mostly older colls. derived from somewhat persistent populations after cultivation of ssp. sativa ("hemp"). More recent records derived from ilicit cultivation or seed-disposal of ssp. indica (Lam.) Cronq. ("marijuana") are generally excluded. How high does Cannabis grow and make? During 1980-2000, an active botanist in Ky.was likely to run into cultivated plants of indica about once a year, sometimes ingeniously hidden. In one case JC was shown where potted plants had been hoisted with pullies into a tree canopy. Ssp. indica can be distinguished primarily by the higher resin content in its epidermal glands; morphological differences are inconsistent (Y). Should the botanist inhale? Ssp. indica is reputed to be generally shorter than ssp. sativa, but it often reaches 3 m in cultivation and the record in Ky. is about 4.3 m, wiith a basal diamater of ca. 13 cm (US DEA 1992; Ky. State Police, London, pers. comm.). A maximum of 6 m has been reported for the species (FNA 3). This rivals Ambrosia trifida for the World Record of an annual plant.