PATRICK MCDUFFEE believes that everyone should have at least one scented geranium on their windowsill year-round, for an on-demand invigorating whiff of fragrance, or to admire its colorful flowers—or to make a homebrewed cup of herbal tea from its leaves. Patrick is the third generation of his family to cultivate scented geraniums at Well-Sweep Herb Farm in rural New Jersey, where 80-something Pelargonium varieties are among some 2,000 different kinds of herb plants in the nursery’s amaz...
