The Third Edition of this extension publication has been organized differently than the previous editions. The changes are a reduction of "Subject Headings" and a 'shuffiing' of sub-headings into different and more appropriate "Subject Headings". The new organization is intended to facilitate its use. Also, approximately 375 new publications under forty "Subject Headings" are included in the new edition. Consistent with the prior editions, most of the publications listed were published since 1980. Briefly, the rationale for publishing such a publication is the author's perceived need for it and the continual encouragement from other horticultural product marketing academics, graduate students, e>.1ension agents, undergraduates. and industry representatives. Most importantly, many of the publications included are not found in Land Grant libraries--either in hard-copy form or electronically. Finally, since 1980 the demand for horticultural products has increased relatively faster than other agricultural products and as a consequence the availability of the materials included in this publication are also increased.