Some varieties of bermuda will reproduce from seed, but most hybrid
varities are seed sterile and must be propagated from sprigs. Where do
you live? If you are in the south seeded varieties will usually work.
Most cold-hardy types, however, are vegetative/

Common bermuda seeded fine for us, but it won't grow in the shade.
We're in the south and coastal bermuda in our pasture seems grow in the
shade at the edge of the woods.