Species

129 other cultivars

perennial

Global Crossing Iris

The Story

Plant Bio

Iris × germanica, the German iris, is a clump-forming herbaceous perennial that spreads via thick, fleshy, surface-creeping rhizomes. It produces stiff, sword-shaped, blue-green leaves arranged in flat, fan-like vertical ranks that remain semi-evergreen in mild climates.

'Global Crossing' is distinguished by its large, heavily ruffled flowers featuring light blue standards and style arms contrasting with dark blue falls and orange-and-blue beards. The sturdy, branched flowering stalks rise above the foliage fan in late spring to early summer, with occasional sporadic rebloom in warm autumn climates.

Uses & Benefits:

Large, heavily ruffled, bi-color blue flowers held high on sturdy stalks above architectural, sword-shaped foliage.

Highly drought-tolerant once established and generally ignored by deer and rabbits.

Provides nectar for large bees and generalist insect pollinators during the late spring transition.

SpeciesIris x germanicaGerman Iris

Essentials

At a Glance

Plant Type

Perennial

Height

36"

Width

18"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9, 10

Water

Low

Humidity

Low to Moderate

Lifespan

Perennial

Native To

Garden origin

Toxicity

Toxic if ingested; skin irritant

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Select a planting site in full sun with exceptional drainage, amending heavy soils with sand or organic matter to prevent waterlogging.
Dig a shallow hole and build a small mound of soil in the center, placing the rhizome on top so its upper surface remains exposed.
Spread the roots down the sides of the mound, fill in with soil, and firm gently, leaving the top third of the rhizome uncovered.
Water thoroughly after planting to settle the soil, then water sparingly until new growth emerges to avoid rot.

Pro Tip

Plant rhizomes so the top third is exposed to direct sunlight and air; burying them or covering them with organic mulch traps moisture and rapidly triggers fatal bacterial soft rot.

Keep It Thriving

Care Guide

Do

Plant rhizomes shallowly with the top surface exposed to sun and air.
Deadhead spent flowering stems down to the base immediately after blooming finishes.
Divide overcrowded clumps every three to four years to maintain vigor and flowering.

Don't

Do not apply heavy organic mulch directly over the rhizomes.
Do not overwater or plant in low-lying areas where water pools.
Do not use high-nitrogen fertilizers, which stimulate soft, rot-prone foliage.

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Border frontsCottage gardensCutting gardensMass plantings

Companion Plants

Salvia Nepeta Paeonia Geranium

Multiply

Propagation Methods

Good to Know

Common Questions

Global Crossing Iris questions

What zones can Global Crossing Iris grow in?

Global Crossing Iris is hardy in USDA Zones 4–10: in that range it survives winter in the ground.

Is Global Crossing Iris deer resistant?

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

When does Global Crossing Iris bloom?

Global Crossing Iris typically blooms from late spring to early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Global Crossing Iris need full sun?

Global Crossing Iris does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Global Crossing Iris drought tolerant?

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