Zone: 4
Height: 1-1.5m [3-5ft]
Spread: 20-45cm [8-20in]
Bloom: May-July; white to white-yellow, yellow, grey-purple
Foliage: Lance-shaped, green
Light: Full sun
Water: Average
Soil: Needs excellent drainage; sandy
Garden Location: Mid-border; nice naturalized near water
Iris spuria halophila (Salt marsh iris, Butterfly iris)
Must have good drainage and be planted shallowly to avoid root rot (rhizome should be exposed); avoid overhead watering.