Plants that bloom in May in Zone 9 with white flowers

Allium

Dramatic globe-shaped heads on tall stems. Architectural and deer-proof.

Anemone de Caen

Poppy-like flowers in jewel tones bloom in mid-spring over ferny foliage.

Angel's Trumpet

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

Azalea

Explosive spring color in every warm hue. Acid-loving woodland classic.

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.

Chamomile

Tiny daisy flowers with apple-scented foliage. Brew into tea or let it naturalize between pavers.

Clematis

The queen of flowering vines. Over 300 species, something for every spot.

Coral Bells

Grown mostly for dramatic foliage, but the tiny bell flowers are a bonus.

Creeping Phlox

An evergreen sun-loving groundcover that smothers walls, slopes, and rock gardens in dense pink, purple, blue, lavender, or white sheets every April and May.

Daffodil

Cheerful trumpets that naturalize beautifully and return stronger each year.

Dianthus

Spicy clove-scented pinks with fringed petals in pink, red, white, or salmon, one of the best long-blooming edgers and front-of-border perennials for sun.

Dogwood

Iconic spring bloomer with fall berries and winter bark. Four-season beauty.

Double Delight Rose

Creamy white petals blush to strawberry red at the edges. Knockout fragrance matches the looks.

Dutch Iris

Slender stems bear elegant iris blooms in late spring to early summer.

Dwarf Crested Iris

Tiny lavender-blue iris flowers with gold crests on a spreading native ground cover. A spring woodland treasure.

Fringe Tree

Clouds of white fringed petals dripping from branches in late spring. Fragrant and underused native.

Gardenia

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

Honeysuckle

Tubular, nectar-rich flowers with a fragrance that defines summer evenings.

Immortality Iris

Reliable rebloomer with pure white ruffled falls. Blooms spring, then again in fall.

Impatiens

The shade annual champion. Flowers prolifically where nothing else will.

Iris

Elegant sword-leaved perennials with intricate, ruffled blooms.

Jasmine

A vigorous twining vine with intensely sweet-scented white or yellow star-shaped flowers, the scent of warm southern evenings.

Lantana

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

Magnolia

Goblet-shaped blooms on bare branches. One of spring's most dramatic moments.

Matilija Poppy

Enormous fried-egg flowers on blue-gray stems. California's largest native wildflower. Spreads aggressively.

Mexican Feather Grass

Gossamer fine blades ripple in the slightest breeze like living silk. Plant where you can watch it move.

Meyer Lemon

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

Pelargonium

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

Persian Buttercup

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

Petunia

Cascading color for containers and beds. Blooms nonstop until frost.

Plumeria

Intoxicatingly fragrant tropical blooms. The flower of Hawaiian leis.

Rose

The queen of the garden. Modern varieties are surprisingly low-maintenance.

Salal

Leathery evergreen groundcover of Pacific Northwest forests. Urn-shaped flowers lead to edible berries.

Salvia

Vertical flower spikes that hummingbirds and bees cannot resist.

Snapdragon

Vertical flower spikes with squeeze-open blooms. Kids love them.

Southern Magnolia

Huge glossy-leaved tree bearing enormous lemon-scented white flowers. The quintessential symbol of the Deep South's summer.

Spirea

Flat-topped flower clusters on tidy mounds. The easiest flowering shrub.

Sweet Alyssum

Honey-scented carpet of tiny flowers. The best living edging plant.

Sweet Pea

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

Thalia Daffodil

Pure white, swept-back petals with two to three blooms per stem. Orchid-like elegance.

Twinspike Coral Bells

Warm amber-caramel foliage that glows in the shade garden all season. The flowers are just a bonus.

Viburnum

Fragrant snowball clusters in spring, then berries for birds in fall.

Vinca

Evergreen mat with periwinkle-blue flowers. Tough shade ground cover.

Wax Begonia

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

White Wild Indigo

Luminous white lupin-like spikes on a structural native that's practically indestructible and improves with every year.

Wisteria

Cascading, fragrant racemes that create a dreamy canopy. Needs structure.