Bicolor Iris

By Artslave - Flickr, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=2061720

Dietes bicolor 

Size: 2-3'x2-3'

Lighting requirements: Full to part sun

Seasonal interest: Blooms spring-summer if happy enough

Winter: Evergreen

Deer-resistance: High

Notes: These may need to be trimmed back if they get winter damage. As they age, they tend to die out in the middle. In my experience, they do not transplant well.