This is the 7554th most frequent German word.
grasskiasse
It seems "grasskiasse" is not a standard German word. Could you provide more context or check for a possible typo?
The word 'grasskiasse' is used as an adjective here to describe the plants as lush.
Die grasskiasse Pflanzen wachsen schnell.
The lush plants grow quickly.
Here, 'Grasskiasse' is used as a noun referring to the quality of being lush.
Ihre Grasskiasse ist beeindruckend.
Her lushness is impressive.
In this sentence, 'Grasskiasse' is used to emphasize the lush quality of the garden.