Disclosed herein is a Senecio plant named 'Sunsenerabu', which is tall and dome-shaped with abundant branching. Petiole length is longer than Senecio L. It has a large inflorescence cluster. Capitula is a single inflorescence with small obscure marginal variegation. The color of the ray florets is light violet and the color of the disc florets is strong violet. Blooming term is longer than Senecio cruentus. Flower buds grow one after another from the axil.