unfoliaged
/ˌʌnˈfɒliɪd/ or /ˌʌnˈfɔːliːd/Definitions
1. adjective
Having lost its leaves, especially those that are usually green
“The unfoliaged trees stood stark against the winter sky.”
2. verb
To lose one’s leaves, especially those that are usually green
“The trees will be unfoliaged by autumn.”