A purple train wreck phenotype unlocked when we crossed Train Wreck with the original Blueberry Muffin. We knew it was a“unicorn” from the beginning. An excessively wide growth pattern will fill your garden past the point of reason, but not to worry—she is extremely resistant to Powdery mildew and bud rot. Its signature turpentine smell comes in part from high levels of Terpinolene.