1: What's left when you burn the tree (3)

3: Vagrant going over a little river to a foreign country (5)

5: Start reducing salt? (3)

6: Road leading into dismal swamp (5)

8: Somehow it is clear and practical (9)

10: Proficient in arithmetic, starting with short division (5)

11: Sort of uninitiated cheat (3)

12: Language making a comeback in modern Italy (5)

13: Call for help oddly stops (3)

1: Flower festival is pointless (5)

2: Grass present round container (7)

3: Sport for the crook, with minimum weight (9)

4: In the manner of a girl (3)

7: Gets in boats at sea (7)

9: Fancies and gets hard around (5)

10: It comes to a point everyone heard (3)