Stachytarpheta jamaicensis, commonly known as blue porterweed, is a perennial herb native to the tropical Americas. It is often found in open areas such as fields, along roadsides, and in disturbed sites. This species typically grows to a height of 1-2 feet (30-60 cm) and spreads to a similar width. Blue porterweed has slender, erect stems with small, oblong leaves and produces spikes of petite, tubular, blue to violet flowers that bloom throughout the year in its native habitat, attracting butterflies and other pollinators.

Blue porterweed is valued for its continuous flowering and ability to attract wildlife, making it a popular choice for butterfly gardens and informal borders. It is considered easy to maintain and can be grown in a variety of soil types, provided they are well-drained. The plant prefers full sun to partial shade and requires moderate watering. While it is not typically aggressive, it can self-seed and spread in favorable conditions. Gardeners should be cautious about its potential invasiveness outside its native range and check local regulations before planting.CC BY-SA 4.0