Plants that bloom in May in Zone 11 with yellow flowers

Aeonium

Dramatic rosettes on woody stems. 'Zwartkop' variety has near-black leaves. Stunning in containers.

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.

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.

Persian Buttercup

Ruffled, rose-like blooms in vivid colors brighten cool spring beds and pots.

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.