Two girls names help!

A • Southern fried Mommy of 2, and soon to be mommy of 2 twin girls!
I'm due in December with twin girls, I def don't want matchy names but I would love the middle names to be nature related as I already have a Reed & Sage (middle names) and would like to keep the theme going. 
First names are pretty well set : Ka'rynne (Kuh-rinn) And Bailey (not set on Bailey though..