Walking Iris (Trimezia coerulea)

General Plant Information (Edit)
Plant Habit:	Herb/Forb
Life cycle:	Perennial
Sun Requirements:	Full Sun to Partial Shade Partial or Dappled Shade
Water Preferences:	Mesic
Minimum cold hardiness:	Zone 7a -17.8 °C (0 °F) to -15 °C (5 °F)
Maximum recommended zone:	Zone 13
Plant Height:	3 to 5 feet (.9-1.5 m)
Flowers:	Showy
Flower Color:	Blue
Bloom Size:	3"-4"
Underground structures:	Rhizome
Suitable Locations:	Houseplant
Uses:	Will Naturalize
Resistances:	Humidity tolerant
Propagation: Other methods:	Division Stolons and runners
Containers:	Suitable in 3 gallon or larger Needs repotting every 2 to 3 years
Awards and Recognitions:	Other: UC Davis Arboretum All Star

Common names

Walking Iris
Apostle Plant
Giant Apostles' Iris
Twelve Apostles

Botanical names

Accepted: Trimezia coerulea
Synonym: Neomarica caerulea
Synonym: Neomarica coerulea
Synonym: Neomarica rigida

Photo Gallery

Uploaded by Ferenc

Location: Miami, Florida
Date: 2024-03-16
Potted Walking Iris

Uploaded by mrszenyulloa

Location: In a garden, Paraty, Brazil
Date: 2013-12-22

Uploaded by bonitin

Location: In my garden, Middletown, Delaware
Date: 2019-07-01

Uploaded by Islandview

Location: my garden, Sarasota FL
Date: 2022-03-17

Uploaded by dyzzypyxxy

Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2018-03-07
Neomarica caerulea - Giant Apostle's Iris 015

Uploaded by dawiz1753

Location: Miami, Florida
Date: 2024-03-16

Uploaded by mrszenyulloa

Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2018-04-03
Giant Apostle's Iris 015

Uploaded by dawiz1753

Location: Hamilton Square Perennial Garden, Historic City Cemetery, Sacramento CA.
Date: 2014-05-23
First wave of blooms today. (05/23/24) Zone 9b.

Uploaded by HamiltonSquare

Location: Hamilton Square perennial garden Historic City Cemetery, Sacramento CA.
Date: 06/10/13

Uploaded by HamiltonSquare

Photo courtesy of Annie's Annuals and Perennials

Uploaded by Calif_Sue

Uploaded by bonitin

Uploaded by Calif_Sue

Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2017-07-11
Giant Apostles Iris 020

Uploaded by dawiz1753

Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2018-03-07
Neomarica caerulea - Giant Apostle's Iris 016

Uploaded by dawiz1753

Location: Paraty, Brazil
Date: 2nd January 2015

Uploaded by bonitin

Uploaded by piksihk

Location: Southwest Florida
Date: March 2014

Uploaded by Dutchlady1

Uploaded by Lalambchop1

Uploaded by bonitin

Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2018-04-13
Apostles' Iris 021

Uploaded by dawiz1753

Location: Hamilton Square Perennial Garden, Historic City Cemetery, Sacramento CA.
Date: 2014-11-28
These fans of leaves are new plantlets that develop from the stem

Uploaded by HamiltonSquare

Date: 2007-10-28
Photo courtesy of: mauroguanandi

Uploaded by admin

Location: Neomarica caerulea specimen in the Museu Botanico Dr. Joao Barbosa Rodrigues, Jardim Botanico de Sao Paulo, Sao Paulo City, SP, Brazil.
Date: 2009-09-26
Photo courtesy of: Daderot

Uploaded by admin

Uploaded by bonitin

Uploaded by piksihk

Uploaded by Joy

Uploaded by Joy

Location: Hamilton Square Perennial Garden, Historic City Cemetery, Sacramento CA.
Date: 2014-06-20
The last wave of flowering.

Uploaded by HamiltonSquare

Uploaded by piksihk

Uploaded by piksihk

Location: My Property Sunset Zone 23 Fallbrook California
Date: 2013-03-09

Uploaded by wcgypsy

Uploaded by piksihk

Uploaded by piksihk

Uploaded by piksihk

Comments:

Posted by gardengus (Indiana Zone 5b) on Feb 17, 2015 3:04 PM concerning plant:

I have grown this plant as a houseplant for several years because it is not hardy in my zone. It is an easy plant to keep, and it rewards me with beautiful flowers in late winter when little else is blooming.
I grow it in a one-gallon pot and I re-pot it every 3rd year.

Reply to this comment
Posted by jmorth (central Illinois) on Mar 2, 2017 1:54 AM concerning plant:

The common name of Apostle Plant is used because of the belief that it will not bloom until it has grown 12 leaves.

Reply to this comment

Plant Events from our members
piksihk	On March 3, 2024	Transplanted three fans to back fence next to
piksihk	On March 29, 2020	Transplanted To back bed - they were not thriving - only three little fans left
piksihk	On May 1, 2018	Transplanted round bed HW;
piksihk	On March 27, 2016	Bloomed
piksihk	On March 28, 2015	Obtained plant JC sale
piksihk	On October 1, 2013	Obtained plant in round pot

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Trimezia Walking Iris (Trimezia coerulea)

Trimezia
Walking Iris (Trimezia coerulea)