My list would be much shorter Perennials - they die back. Tidy if it looks to offending and if you feel like you want to do it. Deadhead if the future blooms are worth the work (often they aren't) or if you like doing it. Shrubs - if it gets too big, prune it. If you are not sure when and how much, check online. If the size is ok, ignore. Deadhead if it looks offending with old blooms (hint: it never does). With few exceptions, that's it for me.
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Perennials - they die back. Tidy if it looks to offending and if you feel like you want to do it. Deadhead if the future blooms are worth the work (often they aren't) or if you like doing it.
Shrubs - if it gets too big, prune it. If you are not sure when and how much, check online. If the size is ok, ignore. Deadhead if it looks offending with old blooms (hint: it never does).
With few exceptions, that's it for me.