🌿 Porterweed 'Blue'
Stachytarpheta jamaicensis
One of South Florida's most beloved native-range butterfly plants, Porterweed 'Blue' produces gracefully arching spikes of vivid blue-purple tubular flowers that bloom continuously year-round in Miami's warm climate. Fast-growing, tough, and extraordinarily attractive to butterflies, hummingbirds, and native bees — a must-have for any South Florida pollinator garden.
🌿 Perennial in South Florida
🌍 Native Origin: Tropical Americas, Caribbean
☀️ Light: Thrives in full sun to partial shade; produces the longest and most abundant flower spikes with 4 or more hours of direct sunlight daily, but adapts well to spots with some afternoon shade in South Florida's intense summer heat.
💧 Water: Moderate water needs; develops good drought tolerance once established; water regularly for the first few months after planting, then reduce to occasional deep watering — Porterweed is quite resilient once rooted into South Florida's warm soil.
📏 Size: Grows 3–5 feet tall with a spreading, arching habit; benefits from occasional pruning to keep it tidy, encourage vigorous new growth, and stimulate the next flush of long blue-purple flower spikes.
🌸 Bloom Time: Blooms virtually year-round in Miami with the long flower spikes progressing continuously from base to tip; one of the most reliably floriferous and butterfly-attracting perennials available for South Florida gardens.
🌱 Landscape Use: Outstanding as a butterfly garden centerpiece, informal border shrub, or naturalistic specimen; pairs beautifully with Porterweed 'Peach', Jatropha, Plumbago, and Pentas in tropical pollinator garden designs, and works equally well as a colorful mid-border or backdrop plant.
💡 Casaplanta Tip: Plant in Coast of Maine Bar Harbor Blend for rich, well-draining soil that supports vigorous spreading growth, and feed every 4–6 weeks with Espoma Flower Tone to keep the nonstop blue-purple flower spikes coming and the butterflies flocking to your garden all season long.