Pink Snakeweed, Coral Porterweed

Binomial name

Stachytarpheta mutabilis

Common names

Blue Porterweed, Purple Porterweed, Mexican Bluebell

Description

Stachytarpheta mutabilis, also known as Blue Porterweed or Purple Porterweed, is a vibrant, low-maintenance shrub that adds a splash of color to tropical and subtropical gardens. Known for its striking spikes of tiny, tubular flowers, the plant blooms in rich shades of blue to purple, attracting bees, butterflies, and hummingbirds. Its dark green leaves are oval-shaped and provide a lush backdrop for the colorful flowers that bloom almost continuously throughout the year, especially during the warm months. Stachytarpheta mutabilis can grow into a bushy shrub, making it ideal for hedges, borders, or as a ground cover in sunny spots. It’s a hardy and resilient plant, well-suited for tropical landscapes, providing long-lasting color and attracting pollinators.

Light requirements

Stachytarpheta mutabilis thrives in full sun, where it can bloom profusely. It needs at least 6 hours of direct sunlight each day for optimal growth and flowering. While it can tolerate partial shade, the plant will flower less abundantly in shadier spots. It’s perfect for sunny garden beds, flower borders, or containers placed in bright locations.

Soil preferences, including pH and drainage

This plant prefers well-draining soil and is tolerant of a variety of soil types, including sandy and loamy soils. Stachytarpheta mutabilis thrives in slightly acidic to neutral soil with a pH range of 6.0 to 7.5. It does best in soil that retains moisture without becoming soggy. Good drainage is essential to avoid root rot, so ensure the soil or container allows excess water to flow through easily.

Water needs

Water Stachytarpheta mutabilis regularly, keeping the soil evenly moist during the growing season. It is somewhat drought-tolerant once established but performs best with consistent moisture. Make sure the soil drains well, as the plant does not like sitting in water. During the cooler months, reduce watering, but don’t allow the soil to dry out completely.