8  Go after alcohol and potassium to find medicinal plant (6)

 9  Hardwood tree found in pair on woodcut (8)

10 Main goal: broadcast a Tom Cruise film (8)

11 North Dakota breaking right lime tree (6)

12 Provide food in advance? (8)

13 Lucas's conjurer is weeping (6)

14 Points surround art equipment for polecats (7)

17 Headdresses covering location (7)

20 This tree has five blood types (6)

22 Made larger and almost larger in the end (8)

25 Putting a shirt into a broken musty container is naughty (6)

26 Agitated rabid owl is fierce beast (4,4)

27 Making hints to end union at sea (8)

28 Class leader cooked peers into tiny pancakes (6)

 2  Stinkers putting thousands into stars (6)

 3  Tree is popular without you (6)

 4  Raiders traipse around (7)

 5  Empty, meaningless, heartless end (8)

 6  Shark doctor admits the French following endless swine (8)

 7  Forsake for self (6)

15 Spy uses wooden shoe for endless currency (8)

16 Upsetting goblin by campaigning (8)

18 Oscillated and stirred sea weeds (8)

19 Tall tree wore odd components (7)

21 Three states for a snack (6)

23 Violet's call is scrambled (6)

24 Bouncing a ball bearing into someone who will regret it (6)