Plants that bloom in May in Zone 6 with yellow flowers

Apeldoorn Tulip

Bold, goblet-shaped Darwin hybrid in scarlet with a black base. Strong stems and long-lasting.

Basket-of-Gold

Bright golden-yellow cascades over walls and rock edges in spring. Cut back after flowering to stay tidy.

California Poppy

Golden cups that carpet hillsides across the state. Closes at night and on cloudy days.

Chamomile

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

Cliffrose

Creamy white rose-like flowers with sweet fragrance and feathery seed plumes on a tough Rocky Mountain native.

Columbine

Delicate, spurred flowers that dance on wiry stems. Hummingbird favorite.

Crossvine

Tubular orange-red trumpets line this vigorous semi-evergreen vine in spring, attracting every hummingbird in the neighborhood.

Daffodil

Cheerful trumpets that naturalize beautifully and return stronger each year.

Dutch Iris

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

Dutchman's Breeches

Finely cut foliage and clusters of puffy white pantaloon-shaped flowers in early spring. A charming ephemeral that disappears by summer.

Epimedium

Delicate fairy-wing flowers above leathery foliage. One of the toughest dry shade groundcovers.

Fawn Lily

Mottled leaves and nodding white flowers with swept-back petals emerge in early spring from Pacific Northwest woodlands.

Flame Azalea

Outrageous blooms in hot orange, red, and yellow on a deciduous native azalea that stops people in their tracks.

Foxglove

Stately spires of spotted, bell-shaped flowers. Cottage garden royalty.

Graham Thomas Rose

Rich golden-yellow cups with an intense tea rose fragrance. David Austin's most famous creation.

Green-and-Gold

Bright yellow star flowers appear for months above mat-forming foliage. The best spring ground cover for the Southeast.

Happy Returns Daylily

Lemon-yellow rebloomer with light fragrance. A bit taller than Stella with softer color.

Honeysuckle

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

Iris

Elegant sword-leaved perennials with intricate, ruffled blooms.

Kerria

Cheerful golden-yellow pompoms on bright green stems that stay vivid green all winter. One of the easiest shade-tolerant shrubs.

Lady's Mantle

Chartreuse frothy flowers and pleated blue-green leaves that hold water droplets like mercury. The ultimate filler plant.

Lewisia

Succulent rosettes with brilliant striped flowers in hot sunset colors. Must have perfect drainage or it rots.

Lupine

Dramatic spikes in every color. Short-lived but self-seeds generously.

Marsh Marigold

Glossy buttercup flowers in early spring along streams and wet areas. One of the first wetland bloomers.

Oregon Iris

Small purple iris flowers with yellow signals on wiry stems. A tough, underappreciated Pacific Northwest native.

Petunia

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

Rose

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

Snapdragon

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

Stella de Oro Daylily

The most planted perennial in America. Compact, reblooming, and basically indestructible.

Tulip

The classic spring icon in almost every color imaginable.

Western Red Columbine

Scarlet and yellow spurred flowers that hummingbirds follow through the Pacific Northwest's mountain meadows.

Wild Columbine

Nodding red-and-yellow spurred flowers that hummingbirds love on a self-sowing native that naturalizes along woodland edges.