perennial

Siberian Iris 'How Audacious'

Iris siberica 'How Audacious'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Asia

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

A robust perennial known for its tall, slender foliage and stunning blue flowers. This cultivar features particularly large blooms compared to other Siberian irises.

Bloom Period:

EarlyLate

Uses & Benefits:

Vivid blue flowers add striking color to early spring gardens, attracting pollinators like bees and butterflies.

Low-maintenance perennial suitable for borders, rock gardens, and naturalized areas.

Supports pollinator populations and enhances biodiversity in garden landscapes.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Tuck seeds into well-draining soil in early fall for natural stratification.
Mist cuttings lightly and keep moist until roots develop, about 6 weeks.
Plant rhizomes in early spring, 2 inches deep and 4 inches apart.
Water regularly during active growth, especially in dry periods.
Fertilize with a balanced fertilizer in early spring and after bloom.
Divide clumps every 3-4 years in late summer to maintain vigor.

Pro Tip

Ensure well-draining soil to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Plant in full sun for optimal flowering ☀️
Water consistently during dry spells to keep soil moist
Apply a balanced fertilizer in early spring and after bloom
Divide overcrowded clumps every 3-4 years
Mulch lightly to retain moisture and suppress weeds

Don't

Don't overwater; soggy soil can cause rhizome rot ❌
Avoid planting too deep; expose rhizomes slightly above soil level
Do not fertilize with high nitrogen fertilizers late in the season
Never leave dead foliage over winter in cold climates
Avoid disturbing plants during peak blooming period

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Splash of violet in perennial borderRock garden accent with striking foliageWildflower meadow edge for early spring bloom

Companion Plants

Daylilies Alliums Peonies Columbines Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

Siberian Iris 'How Audacious' questions

What zones can Siberian Iris 'How Audacious' grow in?

Siberian Iris 'How Audacious' is hardy in USDA Zones 4–7. 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 'How Audacious' deer resistant?

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

When does Siberian Iris 'How Audacious' bloom?

Siberian Iris 'How Audacious' 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 'How Audacious' need full sun?

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

Is Siberian Iris 'How Audacious' drought tolerant?

Yes — once established (usually after the first full season), Siberian Iris 'How Audacious' handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.