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.
1 Use a comma behind conjunctive adverbs when they appear at the beginning of a sentenceâs second clause. The only exception to this rule is that no comma is necessary if the adverb is a single syllable.  If a conjunctive adverb appears in the middle of a clause, it should be enclosed in commas most of the time.