Argemone mexicana, commonly known as Mexican poppy, is an annual herb that is native to the dry, open woodlands and scrublands of Mexico and Central America, but has become naturalized in many parts of the world, including tropical, subtropical, and temperate regions. It typically grows to a height of 20-80 cm (8-31 inches) with a similar spread, and features spiny stems and leaves. The plant produces showy yellow flowers with a poppy-like appearance, which bloom from spring to fall, depending on the local climate. The sap contains bright yellow latex, and the leaves are prickly, which can deter herbivores.

Mexican poppy is valued for its drought tolerance and is often used in xeriscaping and as an ornamental in rock gardens. Its striking yellow flowers can add color to dry, challenging sites. In cultivation, it requires minimal care, thriving in full sun and well-drained soils. It is drought-resistant and can tolerate poor, sandy soils. However, it is important to handle the plant with care due to its prickly nature and toxic latex. Argemone mexicana has medicinal uses, particularly in traditional practices in regions like India, where it is used during the Holika Dahan festival. Despite its uses, it is considered invasive in some regions outside its native range, and it can outcompete native flora and is toxic to grazing animals. Gardeners should be cautious about its potential to spread and should check local regulations before planting.CC BY-SA 4.0