The tall upright, dark green plants with lance–shaped leaves and bright purple, tubular. Mexican petunias are very adaptable and will tolerate wet and dry soils. They prefer full sun but will tolerate shade; however, since flowering is light–related, the plants will flower less in shade. Although Mexican petunias are drought–tolerant once established, they perform best with regular irrigation during droughts and with regular feeding of high phosphorus fertilizers. They are disease– and insect–resistant and only rarely bothered by snails and caterpillars. One limitation of the species is that it can be aggressive in well–cared–for situations, spreading by both seed and rhizomes A dwarf petunia in readily available as a smaller specimen. No deadheading is needed for this variety of petunia.