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3) Sounds like a smart animal (9)
22)Goes with old lace (8)
30) part of animals' face (7)
38)Lonely in vegetable patch (7)
48)Sophie or Roald with letters (6)
59)Hooter with light (8)
77)Heavenly river (9)
82)Animal's lenght (9)
85)Yoga posture (5)

48)Sophie or Roald with letters (6) ... DAHLIA
59)Hooter with light (8) ... HORNBEAM

82)Animal's length (9) ... BEARSFOOT

85)Yoga posture. lotus

30) part of animals' face (7)...Cowslip

38)Lonely in vegetable patch (7) ... PETUNIA (answered by Mamya in another post)
82)Animal's length (9) ... could also be GOOSEFOOT or KITESFOOT or COCKSFOOT (also answered in earlier post).

22)Goes with old lace (8) ... usually, ARSENIC goes with old lace, but isn't a plant and is only 7 letters; so that's a rubbish idea.
77)Heavenly river (9) ... SUNFLOWER.

Thank you JimC and trevor.

Lavender (and old lace) is a film and book.

3) Sounds like a smart animal (9) ... DANDELION.