Stachytarpheta urticifolia: Blue Porter Weed for Butterfly Gardens and Self-Sowing Color

Blue Porter Weed (Stachytarpheta urticifolia) is a pest-free perennial that blooms best in warm months. Small blue flowers attract butterflies more than showier neighbors. It gradually reseeds nearby for fresh plants. Mix with other Stachytarpheta species for varied leaf shapes and colors from purple to coral. Can be invasive in some areas including Florida.

Growing Conditions

Average garden soil, full sun to partial shade. Propagate by seed or stem cuttings. Infrequent problems.

Key Features at a Glance

• Height: 1–3 ft.
• Spread: 1–3 ft.
• Light: Full Sun to Part Shade
• Moisture: Medium
• Maintenance: Moderate
• Characteristics: Attracts Butterflies
• Bloom Time: Early Fall, Early Summer, Late Summer, Summer
• Flower Color: Blue
• Uses: Beds, Borders, Annual
• Type: Perennials