Plants that bloom in August in Zone 11 with yellow flowers

Angel's Trumpet

Huge pendant trumpets release intense evening fragrance over a long warm-season bloom.

Calibrachoa

Mini petunias that bloom nonstop in hanging baskets. Dozens of color options and no deadheading needed.

Celosia

Flame-shaped or crested flowers in electric colors that dry beautifully. Heat lovers that thrive in summer.

Desert Marigold

Cheerful desert wildflower that blooms almost year-round in warm climates. Thrives on neglect.

Hawaiian Hibiscus

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

Pink Plumeria

Clusters of pink, sweetly scented blooms cover this classic tropical tree in summer.

White Plumeria

Highly fragrant white flowers with yellow centers appear in clusters on succulent branches.