Ballerina
There have been some great suggestions that I plan to check out myself but here are my 2 go-to books on the subject.
The Complete Illustrated Encyclopedia of Magical Plants by Susan Gregg. It is colour illustrated for each plant and suggests how to use them magically.
The Encyclopedia of Herbs and Herbalism edited by Malcolm Stuart which is the best usable book on the subject I've ever seen. It does not list magical uses per se but is superb for info on each plant including medicinal and other uses.
The Complete Illustrated Encyclopedia of Magical Plants by Susan Gregg. It is colour illustrated for each plant and suggests how to use them magically.
The Encyclopedia of Herbs and Herbalism edited by Malcolm Stuart which is the best usable book on the subject I've ever seen. It does not list magical uses per se but is superb for info on each plant including medicinal and other uses.