The invention provides seeds and plants of broccoli hybrid SVBL0308. The invention thus relates to the plants, seeds and tissue cultures of broccoli hybrid SVBL0308 and to methods for producing a broccoli plant produced by crossing such plants with themselves or with another plant, such as a broccoli plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to plants, seeds, and tissue cultures of broccoli hybrid SVBL0308 comprising introduced beneficial or desirable traits.