Species

Iris fulvaCopper Iris

1 other cultivar

‘Bayou Bandit’Iris fulva Bayou Bandit

perennial

Lois Copper Iris

Iris fulva 'Lois'

The Story

Plant Bio

Iris fulva, commonly known as the Big Red Iris, is a perennial herbaceous plant distinguished by its tall, slender stems, sword-shaped leaves, and vibrant orange-red flowers that bloom in late spring to early summer.

The cultivar Lois is particularly noted for its larger, more intensely colored flowers and its robust growth habit, making it a striking addition to wetland or garden settings.

Uses & Benefits:

Adds fragrant, purple blooms in spring, enhancing garden aesthetics.

Requires minimal care once established, suitable for borders and containers.

Supports pollinators like bees and butterflies during blooming season.

SpeciesIris fulvaCopper Iris

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9, 10

Water

Moderate

Humidity

Moderate

Lifespan

Many years with proper division

Native To

North America

Toxicity

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 into well-draining soil
Water regularly during first growing season
Divide clumps every 3-4 years in late summer
Mulch to retain moisture and suppress weeds
Place in full sun for best flowering
Fertilize with a balanced fertilizer in early spring

Pro Tip

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

Keep It Thriving

Care Guide

Do

Water during dry spells 🌱
Divide every 3-4 years to prevent overcrowding
Apply balanced fertilizer in spring
Plant in full sun for best blooms

Don't

Avoid overwatering to prevent rot ❌
Don’t bury rhizomes too deep
Skip fertilizing in late fall
Don’t disturb plants during flowering

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Fragrant border with purple flowersEarly spring accent plantWildflower meadow edge

Companion Plants

AlliumDaylilies Hostas Peonies Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

Lois Copper Iris questions

What zones can Lois Copper Iris grow in?

Lois Copper Iris is hardy in USDA Zones 5–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Lois Copper Iris deer resistant?

Not reliably. Deer may browse Lois Copper Iris, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Lois Copper Iris bloom?

Lois Copper 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 Lois Copper Iris need full sun?

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