Tansy is a flowering plant belonging to the Asteraceae family, known for its bright yellow, button-like flowers. It typically grows in fields and along roadsides, reaching heights of about 1 to 3 feet. Tansy has a strong, aromatic scent and is often recognized for its feathery, fern-like leaves. Historically, tansy has been used in traditional medicine and as a natural insect repellent. However, it contains compounds that can be toxic in large amounts, so caution is advised when using it. Tansy is also known for its role in gardening, where it can help deter pests from other plants.