In winter, move the plant to a cooler spot***,*** around forty degrees.

My question is why does put a comma before around forty degrees? "around forty degrees" is not an independent sentence. Is it a nonrestrictive phrase

1 Answer 1


The end of this sentence is just kind of tacked on; it isn't part of a really correct written grammar. Instead, it's an imitation of how people speak. A comma is not really the best punctuation here.

A common, and perhaps the best, way of writing this is with a dash:

In winter, move the plant to a cooler spot—around forty degrees.

Note that this long dash is called an "em dash." Word processing software generally converts three hyphens to an em dash automatically.

You could also use a colon there. That's a more stuffy way of doing it:

In winter, move the plant to a cooler spot: around forty degrees.

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