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.
But please note that within text, if you decide to use the more traditional comma before Jr. or Sr., the function of the comma is to set off these abbreviations, so an additional comma is needed after the abbreviation if the sentence continues (as in my first sentence above).