Question Author
I think they've made an error.
7d clue states 8 letters but grid only allows 5.
The 7d. clue "Vegetarian snacks" in plural would indicate answer to end with letter S'
While I'm sure TALLBOY is correct meaning answer for 7d must end in letter Y.
Answer SEEDY doesn't really make sense for the given clue.
I suspect the wrong indication of 8 letters might mean at some point while compiling the crossword. The setter might have had SEEDBARS as a possible answer before the grid changed not to allow it.