Garden hybrid

This is a garden hybrid, bred from more than one wild species, so it has no single species page of its own.

8 other cultivars

perennial

Louisiana Iris Cobweb Concerto

Iris x hybrida 'Cobweb Concerto'

The Story

Plant Bio

Iris x louisiana 'Cobweb Concerto' is a perennial with graceful, sword-shaped foliage and striking, showy flowers that display a blend of purples and whites, often with a delicate, web-like pattern on the petals.

This cultivar is distinguished by its exceptional flower coloration and the intricate, cobweb-like veining that adds a unique ornamental appeal to garden borders and water features.

Uses & Benefits:

Provides striking purple blooms in late spring, adding elegance to gardens and ponds.

Prefers moist soil, helping to stabilize pond edges and prevent erosion.

Attracts pollinators like bees and butterflies, supporting local ecosystems.

Garden hybrid

Bred from more than one wild species, so it has no species page of its own.

Essentials

At a Glance

Plant Type

Perennial

Height

32 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9, 10

Water

Moist to wet

Humidity

Prefers high humidity environments

Lifespan

Many years with proper division

Native To

Louisiana and southeastern US

Toxicity

All parts are toxic if ingested

Bloom period

Late spring – Late fall

In flower about 7 months of the year

Planting

How to Grow

Tuck rhizomes 2 inches deep in moist, well-drained soil.
Water regularly to keep soil consistently moist but not waterlogged.
Plant in full sun for optimal flowering.
Mulch around the base to retain moisture and suppress weeds.
Divide every 3-4 years in early spring to maintain vigor.
Fertilize with a balanced fertilizer in early spring.

Pro Tip

Ensure soil remains moist and plant in full sun for best blooms.

Keep It Thriving

Care Guide

Do

Water regularly to keep soil moist 🌱
Divide rhizomes every 3-4 years
Mulch to retain moisture and prevent weeds

Don't

Avoid waterlogging, which can cause rhizome rot ❌
Do not plant in deep shade
Skip fertilizing with high nitrogen in late season

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid purple border with flowing texturesElegant pondside planting with shimmering water backdrop

Companion Plants

CannaPickerelweed Swamp Milkweed LobeliaWater Iris

Multiply

Propagation Methods

Good to Know

Common Questions

Louisiana Iris Cobweb Concerto questions

What zones can Louisiana Iris Cobweb Concerto grow in?

Louisiana Iris Cobweb Concerto 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 Louisiana Iris Cobweb Concerto deer resistant?

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

When does Louisiana Iris Cobweb Concerto bloom?

Louisiana Iris Cobweb Concerto typically blooms in late spring through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Louisiana Iris Cobweb Concerto need full sun?

Louisiana Iris Cobweb Concerto does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.