Hei Hua Kui” also known as Black Flower Cheif is a stunning variety of the tree peony plant. It is characterized by its large, dark purple-black flowers with a velvety texture. The blooms of the Hei Hua Kai Tree Peony are unique and eye-catching, making them a popular choice for gardens and landscapes. This plant typically blooms in the late spring to early summer, adding a touch of elegance and beauty to any garden setting. Chrysanthemum form. Flowers 6 to 7 inches. Dark purple. Stalks slightly short, pliable, flowers lateral. Flowers mid-season. Short Height. Growth slow, flowers vigorous.