Meaning of everything in the garden is lovely

[Billy]

Test No. incompl/inter-15 "Popular Idioms (2) Garden", question 6

Everything in the ......... is lovely.

(a) roses
(b) flowers
(c) grass
(d) garden

Test No. incompl/inter-15 "Popular Idioms (2) Garden", answer 6

Everything in the garden is lovely.

Correct answer: (d) garden

Your answer was: correct
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What does this mean?

[Alan]

Everything in the garden is lovely means all is well/everything is all right.
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English as a Second Language
You can read my ESL story Saying It Twice