https://journals.ashs.org/horttech/view/journals/horttech/30/1/article-p13.xml ^A good paper that dives more into the details :)
Lawns certainly have a role; hard to picnic or play soccer in tall fields of native grasses. Keeping a small patch as a part of ones landscaping is fine imo
I’ve had some delicious rose chocolate before. Tho that might have been an extract vs. dried herbs. Worth a try imo