This is a surprisingly comprehensive pruning guide put out by none other than eBay. Certainly, they’re product linking to different pruning items, but they have a specific guide for each kind of shrub, bush or tree that may need pruning. I say this as my husband is walking around the backyard with a landscaper for a quote on how to repair the gigantic mess of a yard we inherited with our new home.
If you have a well -established garden but your maintenance has fallen slightly wayward, this guide should help you to straighten things out. Lilacs, hydrangeas, roses, evergreens, etc. all need proper pruning to stay healthy and lush. Make sure you approach each plant in the appropriate manner!