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