Trifolium campestre, commonly known as hop trefoil, field clover, or low hop clover, is an herbaceous annual plant native to Europe and western Asia, specifically thriving in dry, sandy grasslands, fields, and open areas such as roadsides and wastelands. It is also found in cultivated lands and woodland margins. This species typically grows to a height of 4-12 inches and features small, yellow flowerheads that resemble hop flowers, blooming from late spring to early autumn. The flowers are modest in size but can be quite numerous, creating a noticeable display when in large populations.

Hop trefoil is valued for its nitrogen-fixing ability, which enriches the soil, making it a beneficial plant in agricultural settings. It is often used in wildflower mixes for meadows and is also planted for erosion control due to its fast growth and ground-covering habit. In cultivation, it prefers full sun to partial shade and thrives in well-drained sandy or loamy soils. It is drought-tolerant once established and requires minimal maintenance. However, gardeners should be aware that Trifolium campestre can become invasive outside its native range and may outcompete native vegetation. It is important to consult local guidelines before planting to prevent unintended spread.CC BY-SA 4.0