Polygala subalata, commonly known as Sweet Pea Shrub or Purple Broom, is a perennial herb that is native to Mexico. It is adapted to a Mediterranean climate with wet winters and dry summers, often found in well-drained, sandy soils. This plant typically grows at a moderate rate to a height of 1.5-2.5 feet (0.46-0.76 meters) and a width of 2-3 feet (0.61-0.91 meters). It has an upright, bushy form with slender stems and narrow leaves. The Sweet Pea Shrub is celebrated for its vibrant purple, pea-like flowers that bloom profusely in the summer and fall, adding a splash of color to the garden.

In cultivation, Polygala subalata is valued for its drought tolerance and showy flowers, which make it an excellent choice for rock gardens, Mediterranean landscapes, and as a border plant. It thrives in full sun to part shade and prefers fast-draining sandy or loamy soils. While it requires medium amounts of water, it is important to avoid overwatering to prevent root rot. This plant is generally low maintenance but may benefit from occasional pruning to maintain a compact shape and promote flowering. It is not known for serious pest or disease problems, but it can be susceptible to fungal diseases in poorly drained soils.CC BY-SA 4.0