TheAsparagus officinalis male asparagus clone MD 22–8 (Howard Scott) is highly prized by asparagus breeders but has been very difficult to micropropagate due to its slow growth rate and reluctance to initiate roots. Shoot tips cultured on indole-3-acetic acid or indole-3-propionic acid, at concentrations of 1.53 and 1.44 M respectively, resulted in levels of root initiation and elongation equal to or better than those of a female asparagus clone. These culture conditions also improved the rates of shoot initiation and elongation. Root initiation and elongation were further increased by culture conditions that provided enhanced gas exchange.