Parsley is a lush plant with a beautiful rosette of green foliage. Try growing parsley plants as companions to annuals, perennials, and herbs in beds, containers, and window boxes. Plants make a nice seasonal edging and provide a striking contrast to colorful annuals, like yellow pansies or bright pink petunias. Set plants in full sun or partial shade, and rich, moist soil. Gather parsley stems and leaves as needed. Harvest parsley by cutting the leafy stems from the base of the plant, this will also serve to make the plant grow back bushier. Freeze parsley for winter use; although it is easily dried, it does not keep its flavor well.