Centaurea nigra (Hardhat / Cornflower)

Centaurea nigra, commonly known as Hardhat or Cornflower, is a perennial flowering plant. It has dark violet flowers that bloom in clusters, creating a vibrant and eye-catching display. The plant grows to a height of 3 to 4 feet and has a spread of about 2 feet. It is known for its ability to attract pollinators like bees and butterflies with its nectar-rich blooms.