Jaxon Semi-Cactus Dahlia - Huge Dinnerplate - #1 Size Root Clump - Deep Red Cactus Flower. Huge, bright red flowers. 10" flowers. Height: 36". Loves the sun. Blooms August until the frost in the fall. Hardy in zones 8-10, elsewhere dig & store in the winter Immediate Shipping. #1 size root clump