No Mow May

https://www.nytimes.com/2022/03/28/travel/no-mow-may-wisconsin.html

It is for the benefit of the bees.

The Lawn Nazis are never going to go for it.

Helenium puberlum

https://www.anniesannuals.com/plants/view/?id=2324

Zone 4.  Would be very happy if it did self seed.  Want to try it.

Goose Creek

https://www.anniesannuals.com/plants/view/?id=5197

Philadelphus lewisii 'Goose Creek'

Zone 4 and tolerates clay, I want to try it.