How much sun does Toughleaf iris need?

Toughleaf iris grows best in full sun conditions.

When does Toughleaf iris bloom?

Toughleaf iris blooms in April, May, and June.

Where is Toughleaf iris native?

Toughleaf iris (Iris tenax) is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).

Is Toughleaf iris toxic to dogs?

Yes. Toughleaf iris is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

Is Toughleaf iris toxic to cats?

Yes. Toughleaf iris is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.

What pollinators does Toughleaf iris attract?

Toughleaf iris draws bumble bees and native bees.

Toughleaf iris

Name: Pollinator Patch
Author: Pollinator Patch

Iris tenax

Last reviewed: September 2026

Toughleaf iris (Iris tenax) is a perennial forb native to CA, OR, WA. It blooms in April, May, and June. The flowers draw bumble bees and native bees.

Toughleaf iris is toxic to dogs and cats.

Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-08-15). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435 and your veterinarian's emergency line.

Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.

Light

full sun

Water

medium

Size

8"–16" H × 8"–16" W

Bloom

Apr, May, Jun

Native to

CA, OR, WA

Pollinators

bumble bees, native bees

Before you buy

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Browse plants for this ecoregion

Coast Range Puget Lowland Marine West Coast Forest Northwestern Forested Mountains

A tough, clump-forming perennial with narrow, grass-like leaves and showy purple flowers held just above the foliage in late spring. Stays neat and compact without spreading.

Growing Toughleaf iris

Grow Toughleaf iris in full sun and medium water. Mature plants reach 8 to 16 inches tall and spread 8 to 16 inches wide.

Wildlife value

Flowers provide nectar for bumble bees and other native bees during a short but concentrated spring bloom.

Common questions

How much sun does Toughleaf iris need?: Toughleaf iris grows best in full sun conditions.
When does Toughleaf iris bloom?: Toughleaf iris blooms in April, May, and June.
Where is Toughleaf iris native?: Toughleaf iris (Iris tenax) is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).
Is Toughleaf iris toxic to dogs?: Yes. Toughleaf iris is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
Is Toughleaf iris toxic to cats?: Yes. Toughleaf iris is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
What pollinators does Toughleaf iris attract?: Toughleaf iris draws bumble bees and native bees.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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