They used fertilizer to help the grass green up quickly.
green up
Frequency:
60
%
Adding some plants can really green up a living space.
green up
Frequency:
45
%
Planting more trees will help green up the environment.
Idiomatic Expressions for green up
Phrase: green up
Meaning: to become more lush or verdant, especially in reference to plants or landscapes
Usage: After a few weeks of rain, the garden finally started to green up and look more vibrant.