What's the plural form of turfgrass? Here's the word you're looking for.
Answer
The noun turfgrass can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be turfgrass.
However, in more specific contexts, the plural form can also be turfgrasses e.g. in reference to various types of turfgrasses
or a collection of turfgrasses.