Plants that bloom in September in Zone 3 with green flowers

Big Bluestem

The signature grass of the tallgrass prairie, turning copper-bronze in fall with distinctive turkey-foot seed heads.

Blue Grama Grass

Short clumping grass with distinctive eyebrow-shaped seed heads thrives in dry soils.

Flowering Tobacco

Tubular flowers that release sweet fragrance at dusk. A cottage garden classic that attracts moths and hummingbirds.

Limelight Hydrangea

Cone-shaped blooms open chartreuse, mature to white, then blush pink in fall. Tough as nails.

Little Bluestem

Upright clumps turn coppery orange in fall and stand well through winter.

Little Lime Hydrangea

Compact Limelight. Same color show in a smaller package perfect for borders and containers.

Ostrich Fern

Tall vase-shaped fronds that unfurl from fiddleheads in spring. Spreads to form dramatic colonies.

Prairie Dropseed

Fine-textured mounds send up airy fragrant flower sprays that persist into winter.

Sedum

Succulent leaves, tough as nails. Ages to deep crimson in autumn.