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