Some resources that you may find helpful.
On-line bookstore

Horticultural Books from Timber Press

All Subjects Annuals Architecture Bonsai & SE Asia Books for Growers Botanical Science Bulbs Cacti & Succulents Climbers Cut Flowers Economic Horticulture Ethnobotany Forestry Garden Literature Ground Covers & Grasses Herbs Landscaping & Design Low Water Gardening Mosses, Ferns, and Fungi Native Plants Natural History New Zealand Plants Orchids Perennials Reference Regional - Pacific NW Regional-SE & Central Rhododendrons & Azaleas Rock Gardening Roses Small Gardens The Art of Plants Treasures from S. Africa Trees and Shrubs Tropicals & Exotics

Management Books from ExecutiveBooks