Species

Iris sibiricaSiberian Iris

20 other cultivars

perennial

Siberian Iris 'Mission Bay'

Iris sibirica 'Mission Bay'

Same species

Species

Iris sibiricaSiberian Iris

20 other cultivars

Essentials

At a Glance

Plant Type

Perennial

Height

28 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Medium to wet

Humidity

Average

Lifespan

Perennial

Native To

Central Europe and temperate Asia

Toxicity

All parts are toxic if ingested.

The Story

Plant Bio

Tall, elegant flowers with sword-like foliage, ideal for moist areas. Approximately 3 feet tall with striking blue flowers that have a unique shape compared to other iris types.

Bloom Period:

EarlyLate

Uses & Benefits:

Iris sibirica Mission Bay offers stunning blue blooms and elegant foliage, enhancing perennial borders and rock gardens.

Provides reliable ground cover and naturalizes well, reducing garden maintenance.

Supports pollinators like bees and butterflies, contributing to local biodiversity.

Planting

How to Grow

Tuck rhizomes 2 inches deep in well-draining soil in early spring.
Water thoroughly after planting to settle soil around roots.
Apply a balanced fertilizer in early spring for vigorous growth.
Divide clumps every 3-4 years in late summer to maintain health.
Remove spent flowers to promote rebloom and tidy appearance.
Mulch lightly to retain moisture and suppress weeds during spring and summer.

Pro Tip

Plant iris sibirica in full sun for best flowering and foliage vigor.

Keep It Thriving

Care Guide

Do

Water regularly during active growing season 🌱
Deadhead spent flowers to encourage more blooms
Divide clumps every 3-4 years for optimal health
Plant in well-draining soil to prevent root rot

Don't

Avoid overwatering in winter ❌
Don’t plant in heavy clay soil without amendments
Refrain from fertilizing after late summer
Never leave dead foliage over winter

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Silvery‑foliaged borderPerennial bed accentRock garden centerpiece

Companion Plants

Salvia Daylilies Sedum Russian sage Echinacea

Multiply

Propagation Methods

Good to Know

Common Questions

Siberian Iris 'Mission Bay' questions

What zones can Siberian Iris 'Mission Bay' grow in?

Siberian Iris 'Mission Bay' is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Siberian Iris 'Mission Bay' deer resistant?

Yes — Siberian Iris 'Mission Bay' is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Siberian Iris 'Mission Bay' bloom?

Siberian Iris 'Mission Bay' typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Siberian Iris 'Mission Bay' need full sun?

Siberian Iris 'Mission Bay' does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.