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