Poorman’s Weatherglass

Anagallis arvensis ssp. foemina, commonly known as Poorman’s Weatherglass, is a subspecies of the broader Anagallis arvensis, belonging to the family Primulaceae. This plant is native to Europe and parts of Asia but has since been introduced to various regions around the world, including North America. It typically thrives in disturbed areas, such as fields, roadsides, and gardens, and is often found in sandy or loamy soils. The growth habit of Poorman’s Weatherglass is characterized by its low, sprawling form, reaching heights of approximately 10 to 30 centimeters. The stems are usually prostrate, allowing the plant to spread across the ground.

The leaves of Anagallis arvensis ssp. foemina are opposite, simple, and ovate to lanceolate in shape, measuring about 2 to 5 centimeters in length. They are typically bright green and may exhibit a slightly hairy texture. The flowers are one of the most notable features of this plant; they are small, usually measuring around 1 to 2 centimeters in diameter, and can be found in shades of blue, red, or purple, with five petals that are often fused at the base. The flowering period generally occurs from spring to early autumn, attracting various pollinators. The fruit is a small capsule that contains several seeds, which are dispersed upon maturity, contributing to the plant’s ability to colonize new areas.

Ecologically, Poorman’s Weatherglass plays a role in providing nectar for pollinators and serves as a food source for certain herbivorous insects. While it is not widely cultivated for human use, it has been noted in traditional practices for its potential medicinal properties. An interesting adaptation of this subspecies is its ability to respond to environmental conditions; the flowers can close in response to adverse weather, a feature that has contributed to its common name, reflecting its historical use as an informal weather indicator. This adaptive behavior enhances its survival in varying conditions, demonstrating the resilience of this plant in its native and introduced ranges.