Plants that bloom in May in Zone 11 with white flowers

Angel's Trumpet

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

Annual Vinca

Glossy-leaved heat champion (botanically unrelated to true Vinca minor) that blooms through humidity that wilts everything else.

Bachelor's Button

True cornflower blue that almost no other flower can match. Cottage garden classic that self-sows reliably.

Bougainvillea

Explosive cascades of papery magenta, hot pink, or coral bracts that smother walls, fences, and pergolas with nonstop color from spring through fall in zones 9 to 11.

Calibrachoa

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

Gardenia

Glossy evergreen foliage frames intensely fragrant white flowers from late spring into summer.

Ixia

Wiry stems hold star-shaped flowers in jewel colors. Corn lily, a long-lasting cut flower that closes at night and opens with the sun.

Larkspur

Tall spires of spurred flowers in deep blue and purple. The annual cousin of delphinium, easier to grow from seed and just as dramatic.

Meyer Lemon

Sweetly scented white blossoms appear intermittently year-round and set thin-skinned lemons.

Nigella

Sky-blue flowers wreathed in feathery green bracts give way to ornamental striped seed pods. Self-sows freely once you start.

Pelargonium

The classic window-box geranium. Ball-shaped flower clusters above scalloped leaves. Tough container staple.

Pentas

Star-shaped flower clusters that hummingbirds and butterflies hit on every pass. Blooms nonstop in heat that stops impatiens cold.

Persian Buttercup

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

Plumbago

Sky-blue phlox-like clusters bloom nonstop in warm climates. The blue flower that thrives where most blues melt in summer heat.

Stock

Dense spikes of clove-scented blooms in soft pastels. Cool-season cut flower that fills a room with spicy perfume.

Sweet Pea

Ruffled, intensely fragrant climbing flowers in every pastel shade. Cool-season annual that hates heat.

Wax Begonia

Glossy leaves and nonstop flowers in sun or shade. One of the most reliable bedding plants anywhere.

White Plumeria

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