perennial

Black Swan Bearded Iris

Iris germanica 'Black Swan'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

24 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8, 9

Water

Low to moderate

Humidity

Average garden humidity

Lifespan

Perennial

Native To

Southern Europe, Mediterranean

Toxicity

Toxic to humans and pets if ingested

The Story

Plant Bio

Tall and elegant flowering perennial with dark, almost black petals. Unique deep purple to black color with frilled edges.

Bloom Period:

EarlyLate

Uses & Benefits:

The Iris germanica 'Black Swan' provides stunning deep purple blooms that add elegance to any garden setting, attracting pollinators like bees and butterflies.

Its vigorous growth helps control soil erosion and can serve as a natural barrier.

Supports local pollinators, enriching garden biodiversity.

Marketplace

Where to Buy

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

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Planting

How to Grow

Choose a well-drained, sunny location for planting.
Tuck rhizomes 2 inches deep and 12 inches apart in early spring.
Water thoroughly after planting to settle the soil.
Apply a balanced fertilizer in early spring and after blooming.
Mulch around plants to retain moisture and suppress weeds.
Divide overgrown clumps every 3-4 years in late summer or early fall.

Pro Tip

Ensure good drainage to prevent rhizome rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Water regularly during dry spells 🌱
Deadhead spent blooms to encourage more flowers
Divide clumps every few years for vigorous growth
Apply fertilizer in early spring and after flowering

Don't

Avoid overly wet soil to prevent rot ❌
Don’t disturb the rhizomes during blooming period
Refrain from using high-nitrogen fertilizer which encourages foliage over flowers
Don’t plant too deep; keep rhizomes close to the surface

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Elegant border plant with deep purple flowersClump-forming accent in perennial bedsStriking cut flower in floral arrangements

Companion Plants

Salvia Daylilies Peonies Alliums Lavender

Multiply

Propagation Methods

Good to Know

Common Questions

Black Swan Bearded Iris questions

What zones can Black Swan Bearded Iris grow in?

Black Swan Bearded Iris is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Black Swan Bearded Iris deer resistant?

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

When does Black Swan Bearded Iris bloom?

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

Does Black Swan Bearded Iris need full sun?

Black Swan Bearded Iris does best in full sun (6+ hours).

Is Black Swan Bearded Iris drought tolerant?

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