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 Quick Answer. When a word like and, or, and but (called conjunctions) joins two independent clauses (i.e., clauses that could stand alone as sentences), you should put a comma before it. Put a Comma before a Conjunction If It Joins Two Independent Clauses. Words like and, or, and but are known as conjunctions.