Plants that bloom in May in Zone 9 with green flowers

Common Fig

Large lobed leaves and sweet late-summer fruits give a Mediterranean feel to the garden.

Coral Bells

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

Jack-in-the-Pulpit

Hooded green-and-brown striped spathe sheltering a hidden spadix. Woodland curiosity followed by red berries.

Mexican Feather Grass

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