Specific auxin-containing formulations which contained primarily indolebutyric acid (IBA), and/or napthaleneacetic acid (NAA) were most effective in promoting rooting of terminal stem cuttings of poinsettia (Euphorbia pulcherrima Willd.).
Received for publication September 21, 1973. Michigan Agricultural Experiment Station Journal Article No. 6545. Supported in part by a grant from Eckes, Inc., Encinitas, California, and Mikkelsens, Inc., Astabula, Ohio.