Basil is a warm-weather, fragrant herb that tastes great in Italian dishes—and let’s not forget homemade pesto! Plant seeds or transplants after all danger of frost has passed and soil is warm, and it will yield an abundant harvest within weeks. Keep harvesting the leaves to keep the plant going strong. The most common type of basil is sweet basil; other types include purple basil (less sweet than common basil), lemon basil (lemon flavor), and Thai basil (licorice flavor). Basil is easy to grow but it only grows outdoors in the summer—and only once the soil has warmed up nicely—so plan accordingly. If you’re planning on making pesto, grow several plants. Otherwise one or two basil plants yields plenty.