Prize-winning crossword

Use the following answers to complete a quotation by 19th century dramatist and writer Douglas William Jerrold. The country being referred to will be found at 8 across. ‘Earth is here so kind, that 20 across 21 across her 9 across a 13 across and she 24 across 9 across a 10 across.’

ACROSS

8 Country being referred to in the hidden quotation (9) 9 Accompanied by (4) 10 Process of gathering crops (7) 12 Very clever person (6) 13 Bladed garden tool (3) 14 Oriental temple, such as that in Kew Gardens (6) 17 Stage musical based on T. S. Eliot poems (4) 18 Young horse (4) 19 Small whirlpool (4) 20 Morally right and fair (4) 21 Excite, with a pleasant thrill (6) 22 Stupid or boorish man (3) 24 Expresses amusement (6) 26 Libocedrus decurrens, the ___ cedar (7) 30 Evergreen coniferous tree (4) 31 Spring flower with greater and lesser types (9)

DOWN

1 English spa city (4) 2 Former Russian emperor (4) 3 Soft, creamy French cheese (4) 4 Laziness of a type of bear? (5) 5 Variety of pea with an edible pod (9) 6 ‘___ Lake’, variety of climbing rose (4) 7 Cornish town, near where the 29 down Project is located (2,7) 11 Spring flower with purple, blue or white flowers(6) 15 ___ araucana, the monkey puzzle tree or Chilean 30 across (9) 16 Genus of tussock-forming rock plants, also known as rock jasmine (9) 17 Translucent cover for protecting outdoor plants (6) 23 Acer campestre, the ___ maple (5) 25 Narrow Sco ish valley (4)