The library's physical format (printed) books are organized by call numbers based on the Library of Congress Classification System.
Browse the Main and Hawaii Collections shelves for books on specific topics.
S for Agriculture (General)
SB for Plant Culture topics
SD for Forestry topics
QK for Botany topics
Encyclopedias and other reference works can give you basic facts and terminology that can lead you to more sources.
The American Horticultural Society Encyclopedia of Plants and Flowers by 
CRC Handbook of Plant Science in Agriculture by 
Encyclopedia of Tropical Plants: Identification and Cultivation of Over 3000 Tropical Plants by 
Hortus Third : a concise dictionary of plants cultivated in the United States and Canada by 
Windward Community College Library