If youâre a gourmet gardener whoâd like to give some Asian vegetables space in your yard, check out the specialty seed catalogs for bok choy, pak choy, Chinese broccoli, Chinese cabbage (many kinds), Chinese mustard, daikon radish, garland chrysanthemum, tyfon and snow peas.
In general, do not use a comma before and or or in a series: The snow stalled cars, buses and trains. Use commas to separate elements in a series, but do not put a comma before the conjunction in a simple series: The flag is red, white and blue.
The short answer is no. Itâs unusual to put a comma before because. You only do it when you need the comma to prevent confusion because your sentence could have two meanings. The Chicago Manual of Style has an excellent entry on this topic in its Q&A section online. It gives the example.