Typha latifolia is a perennial herbaceous plant in the family Typhaceae, commonly known as the broadleaf cattail, bulrush, or reedmace. It is one of the most widely distributed wetland plants in the world, native to North and South America, Europe, Asia, and Africa. The genus name Typha is derived from the Ancient Greek tīphos, meaning "marsh" or "fen," while the species epithet latifolia is Latin for "broad-leaved," distinguishing it from its narrower-leaved relatives. Historically, it has been referred to as the "supermarket of the swamp" due to its incredible versatility as a survival food and utilitarian resource for indigenous cultures globally.

The plant is characterized by its long, sword-like leaves and a distinctive brown, cylindrical flowering spike that resembles a corn dog or a cat's tail. It thrives in freshwater marshes, ponds, and riparian zones, where it spreads aggressively via a thick network of starchy underground rhizomes. These rhizomes serve as a vital energy storage organ for the plant, allowing it to survive dormant periods and quickly recolonize disturbed wetlands. As an ecological "engineer," Typha latifolia provides essential habitat for waterfowl and helps filter nutrients and sediments from water systems.

As a food source, Typha latifolia provides various edible parts depending on the season. In early spring, the tender young shoots (often called "Cossack asparagus") are harvested and eaten raw or cooked. In late spring, the immature green flower spikes can be boiled and eaten like corn on the cob. By mid-summer, the plant produces copious amounts of bright yellow pollen, which is collected and used as a nutrient-dense flour extender. The most significant year-round food source is the starchy rhizome, which can be processed to extract a fine white flour or roasted and eaten like a fibrous potato. In modern times, while less common in commercial markets, it remains a staple in foraging communities and is studied for its potential as a sustainable biofuel and wastewater treatment agent.

Nutritionally, the rhizomes and pollen of Typha latifolia are high in complex carbohydrates, providing a significant source of calories, along with moderate amounts of protein and minerals like potassium and phosphorus. The plant contains various bioactive compounds, including sitosterols and fatty acids with reported anti-inflammatory and wound-healing properties. While generally safe, the plant is a known "bioaccumulator," meaning it can absorb heavy metals and pollutants from contaminated water, which can render the plant toxic if harvested from industrial or polluted areas.