Blue Flag Iris
Iris versicolor
Blue Flag Iris is a perennial for focal point, mid-border, suited to full sun to partial shade and clay, loam or moist ground, flowering May, Jun, Jul.
| Type | Perennial |
|---|---|
| Mature height | 75 cm |
| Spread | 60 cm |
| Aspect | full sun to partial shade |
| Foliage | Deciduous |
| Hardiness | USDA 3a-9a |
| Pollinator-friendly | Yes |
| Pet-safe | No |
Where to use it in a border
At around 75 cm, it sits best toward the back of a border, or on its own as a focal point with room around it. Give it about 60 cm of room to spread. It is hardy across USDA zones 3a to 9a, so check it suits your area before planting.
It appears in our lists of full sun, clay soil, wet soil, pollinator-friendly plants.
Border Builder uses Blue Flag Iris's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.
Flowering through the year
Worth knowing
- It copes with ground that stays wet, which most border plants will not.
- Not recorded as pet-safe; site it away from pets that graze if that matters to you.
- Its flowers are valued by bees and other pollinators.
Good companions
Plants that share its conditions and style, chosen to complement its place in the border:
- Allegheny Monkeyflowerto edge in front
- Aromatic Asterto edge in front
- Betonyto edge in front
- Bird's-foot Trefoilto edge in front
- Blanket Flower 'Arizona Sun'to edge in front
- Blue Mistflowerto edge in front
Garden styles
Sources
Bloom timing and hardiness drawn from: