Plants that bloom in November in Zone 9 with yellow flowers

Chrysanthemum

The fall icon. Mounds of color when everything else is fading.

Hawaiian Hibiscus

Large tropical blooms in vivid colors appear repeatedly from spring through fall.

Lantana

Multi-colored flower clusters that bloom relentlessly in brutal heat.

Sedum

Succulent leaves, tough as nails. Ages to deep crimson in autumn.

Sweet Olive

Small clustered flowers perfume the garden with an apricot-like scent over a long season.