Purple, petunia-like flowers appear continuously throughout the warm season on broad clumps of tall, upright, stems with narrow, elongated, dark green leaves. Plant towards the rear of a border or as an accent in a mixed container. Versatile and adaptable to varied conditions, from wet soils to waterwise gardens. An herbaceous perennial. Highly adaptable, but thrives in organically rich, well-drained soil, grows vigorously in wet soils and tolerates moderate drought. s best in full sun. Water deeply, regularly during the first growing season to establish an extensive root system, once established, reduce frequency. Prune back old foliage before new growth emerges in spring. Excellent free-ing plant in large containers. May be grown indoors as a houseplant. Excellent annual flowering plant for areas where it is not winter hardy. It may be effectively grown in bog gardens, as a pond marginal, and in beds and borders. Follow a regular watering schedule during the first growing season to establish a deep, extensive root system. Established plants are drought tolerant. s best in full sun. May be hardy to USDA zone 7 with winter protection. For a neat appearance, remove old foliage before new leaves emerge. ‘Purple Showers’ is a vigorous, upright, Mexican petunia (also called Mexican blue ) that typically grows in a clump to 3-4 feet tall. Tubular, petunia-like flowers freely from the leaf axils from late spring to frost on greenish-purple stems clad with , willowy, sword-shaped, green leaves.