Crimson clover is a legume that is often used as a cover crop or in forage mixes. It is known for its ability to improve soil health, as it adds nitrogen to the soil as it grows. Crimson clover also has deep roots which help to break up compaction and improve drainage. In terms of what crimson clover attracts, it is known to attract bees and other pollinators. The flowers are a rich source of nectar and pollen, making them an important food source for these insects. Crimson clover can also be used as a green manure crop, meaning it can be tilled into the soil to improve fertility.