Species

Iris x germanicaGerman Iris

110 other cultivars

perennial

Absolute Treasure Bearded Iris

Iris x germanica 'Absolute Treasure'

The Story

Plant Bio

Iris germanica 'Absolute Treasure' is a bearded iris known for its striking yellow flowers.

This cultivar has a unique coloration and robust growth habit.

Uses & Benefits:

Provides dramatic, elegant blooms in garden borders and floral arrangements, adding vibrant color and texture.

Low-maintenance perennial that requires minimal care once established.

Supports pollinators such as bees and butterflies, contributing to local biodiversity.

SpeciesIris x germanicaGerman Iris

Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

10+ years

Native To

Garden origin

Toxicity

All parts are toxic if ingested; can cause skin irritation.

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Tuck rhizomes 2 inches deep in well-drained soil in early spring.
Mist cuttings lightly with water to encourage root growth.
Plant in full sun for best bloom results.
Water regularly during active growth, avoiding waterlogged soil.
Divide clumps every 3-4 years in late summer to maintain vigor.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

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

Keep It Thriving

Care Guide

Do

Plant in full sun for optimal flowering 🌞
Water deeply during dry periods 💧
Apply a balanced fertilizer in early spring
Divide every 3-4 years to rejuvenate

Don't

Avoid waterlogging, which can cause rhizome rot ❌
Don’t plant too deeply, as it may hinder blooming
Refrain from over-fertilizing, which can lead to lush foliage but fewer flowers

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

Colorful perennial borderElegant cut flower arrangementGroundcover in sunny beds

Companion Plants

SalviaLavender AlliumPeony Daylily

Multiply

Propagation Methods

Good to Know

Common Questions

Absolute Treasure Bearded Iris questions

What zones can Absolute Treasure Bearded Iris grow in?

Absolute Treasure Bearded Iris 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 Absolute Treasure Bearded Iris deer resistant?

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

When does Absolute Treasure Bearded Iris bloom?

Absolute Treasure Bearded Iris 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 Absolute Treasure Bearded Iris need full sun?

Absolute Treasure Bearded Iris does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Absolute Treasure Bearded Iris drought tolerant?

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