Lavender Porterweed, also known as Stachytarpheta mutabilis, is a perennial flowering plant that belongs to the Verbenaceae family. It is native to South and Central America but is commonly found in gardens and landscapes throughout the southern United States. Lavender Porterweed grows up to 3-4 feet tall and has lance-shaped leaves with serrated edges. The plant produces dense clusters of small tubular flowers that are lavender colored and attract butterflies and hummingbirds. The flowers bloom from summer through fall and may continue blooming through winter in frost-free areas. Lavender Porterweed prefers full sun to partial shade and well-draining soil and is tolerant of drought and heat.