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