Reddit reviews Dirr's Hardy Trees and Shrubs: An Illustrated Encyclopedia

This book might help you pick out plants, this book by Dirr might help you understand the plants in the book of lists a little better. You will still need to learn how to make a plant schedule and what size plants to pick out, theres some interesting information here. In general, small plants for civil jobs will be specified as 3 gallon or 5 gallon bucket sizes. 7 gal if you want it to be larger, and 15 gal if they need to be big fast, but i have never put anything bigger than a 5 gallon on my civil jobs.