Shapely Shrubs or Shear Madness?
Pruning Trees and Shrubs Resources
This webpage discusses the effects of pruning and explains when, why and how to prune landscape trees and shrubs. Pruning Small Trees and Shrubs. University of California Cooperative Extension Agricultural and Natural Resources Ventura County. n.d. http://ceventura.ucanr.edu/Environmental_Horticulture/Landscape/Pruning/
Additional pruning resources include:
Chalker-Scott, Linda. The Myth of Top-Pruning Transplanted Material. Washington State University Puyallup Research and Extension Center. https://s3.wp.wsu.edu/uploads/sites/403/2015/03/transplant-pruning.pdf
Lacan, Igor. Pruning and Tree Physiology: The Bad and The Ugly. UC IPM Green Bulletin. December 2013. https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=14551