From the sentence, "The early summer garden was lush with bright, hearty lowers; the blossoms seemed to overflow from their beds and pots.", the meaning of the word "lush" according to context is <u>growing abundantly</u>.
The dictionary meaning of the word "lush" means when something is plentiful or in abundance and is usually used when describing a vegetatio.
The word choice in the sentence adds to the development of the story by providing descriptive imagery. By doing this, the author allows readers the ability to visualize detailed images of the text in their heads.