Dahlia Tubers › Chi Black Velvet Image 1 of 2 Image 2 of 2 Chi Black Velvet $16.00 sold out Dark burgundy/purple formal decorative. Excellent cut flower.Height: 3.5-4’This listing is for one dahlia tuber. Sold Out Added! Dark burgundy/purple formal decorative. Excellent cut flower.Height: 3.5-4’This listing is for one dahlia tuber.