Horseradish is at its best in fall and winter. Like so many other root vegetables, however, it stores well and is often available in decent shape well into spring. Jerusalem artichokes/sunchokes are brown nubs, that look a bit like small pieces of fresh ginger.
Using Ms. or Mrs. in a cover letter depends on whether or not you know the marital status of the woman. If you are ever uncertain, it is always safe to use Ms. because it does not make an assumption about her marital status.
According to Time, Mrs. refers to a married woman, while Ms. refers to a woman regardless of her marital state. If you know that a woman is married, then it is appropriate to use Mrs. You may also use Miss to address an unwed woman.