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.
In the United States and Canada a period is usually used (see Abbreviation). Mrs originated as a contraction of the honorific Mistress, the feminine of Mister, or Master, which was originally applied to both married and unmarried women. The split into Mrs for married women and Miss for unmarried began during the 17th century; the 20th century saw the coinage of a new unmarked option Ms. It is rare for Mrs to be written in a non-abbreviated form, and the unabbreviated word lacks a standard spelling. In literature it may appear as missus or missis in dialogue. A variant in the works of Thomas Hardy and others is Mis'ess, reflecting its etymology.