Boston-type with exceptional disease resistance for fall.

Big heads with thick, flavorful leaves. Compared to Nancy, Sylvesta has the same maturity, frame size, and great flavor; very close in color, with Nancy being slightly darker. Sylvesta has a more upright habit than Nancy and holds longer in the field. High resistance to downy mildew races 1-17, 19, 21, 23 and Nasonovia ribisnigri aphid; intermediate resistance to lettuce mosaic virus. MT0-10. Also available with NOP-compliant pelleting. Organically grown. Avg. 350,000 seeds/lb. Packet: 500 seeds.