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I think you have a red Geum but there are many red varieties. If you do a google search for red Geum and click on Images, you'll see a list red hybrids and many, many pictures. Blue is not a common flower in nature. I can only think of several; great blue lobelia, Salvia azurea, delphinium, tall and short balloon flower, Campanula groundcovers, and peached leaved bellflower, Campanula persicifolia.

I believe it's Pittosporum eugenioides, common name lemonwood.

New Zealand native.

I am unable to identify this from the picture. You can take a sample to your local extension service and they will be able to identify this for you. This link will help you to find the closest one to you: https://www.gardeningknowhow.com/extension-search

Looks like oregano

Thank you for sending us your gardening question. I also live in WI and know we have no shortage of wild grapes around here. If the leaves are kind of comparable to a maple leaf, it's probably a wild grape.
http://www.gardeningknowhow.com/edible/fruits/grapes/how-to-make-a-grapevine-support.htm

I can't identify this from the photo, but you can take it to your local extension service, and they may be able to help. If it looks healthy, I would not cut anything off. If it starts looking bad, then you can cut off affected leaves but otherwise I would leave them.

This link will help you to find you closes local extension service: https://www.gardeningknowhow.com/extension-search