Sorry, but I don't like naming themes for siblings - in your case, the flower/plant theme. I don't care for the name
Clover. It says it a female name, but I don't think it's feminine. It reminds me of the male name
Clovis. But, I don't like it for a boy, either. I like the middle names
Isabelle (that spelling),
Isabella, and
Alyssa.