This is the 7717th most frequent Russian word.
зелёного
"Зелёного" means "green" (genitive or accusative singular masculine/neuter or genitive plural form in Russian).
The word 'зелёного' is used as an adjective in genitive singular form describing the color associated with the bushes.
У нас в саду есть кустарники зелёного цвета.
In our garden, there are bushes of green color.
The word 'зелёного' is the genitive singular form of the adjective modifying 'стола' (table), indicating the qualifier for the noun.
Я взял книгу с зелёного стола.
I took the book from the green table.
The word 'зелёного' is used in its descriptive role in the genitive singular form to specify the type of tea (green tea).