Crossword Puzzle Sunless state

Clue: Sunless state

State tree of Me. (PINE with 4 letters)
Leave a solid state (MELT with 4 letters)
Ocean State coll. (URI with 3 letters)
Number of states whose last two letters are its own postal abbreviation (ONE with 3 letters)
State bordering British Columbia (IDAHO with 5 letters)
Okla. state tree (REDBUD with 6 letters)
Volunteer's statement (ILLGO with 5 letters)
Knocked-out state (COMA with 4 letters)
State's man (ROGERS with 6 letters)
Orderly state (NEATNESS with 8 letters)