Tall Bearded Iris 'Swerti'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Swerti
Registered or introduced: 1612
» View all varieties of Iris


Tall Bearded (TB)


18-24 in. (45-60 cm)


12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

18-24 in. (45-60 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Bloom Color:


White/Near White

Bloom Time:

Unknown - Tell us



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Awards (if applicable):

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

Wichita, Kansas

Louisville, Kentucky

Harlowton, Montana

Lawton, Oklahoma

Thompsons Station, Tennessee

Meridian, Texas

Winnsboro, Texas

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Gardeners' Notes:


On Apr 9, 2016, texasrobin from Meridian, TX wrote:

This iris was in my parents' yard and my father mowed over it for more than 40 years. It bloomed for the first time the Spring after he died. I dug up that resilient clump and planted in my garden. It has flourished and I have divided it several times.
The bloom is miniature and the leaves are smaller with a sturdy fan.
I am so glad to finally find out the name of this heritage iris.


On Dec 24, 2011, harloiris from Harlowton, MT wrote:

I find Swertii very lovely, and it is a very good grower; always blooms; has good increase. My grow to 27-28 inches. The falls do curl, but that's part of its charm.


On Jul 12, 2011, sjlfinne from Lawton, OK wrote:

This iris can be found in the 1930`s AIS check list. It is shown as a TB, but my plants are very short. About 18" high.
It has small blooms, about 3", and it blooms midseason. It always has the falls curled up.


On May 5, 2009, lovelyiris from Winnsboro, TX wrote:

Everything about this plant is about the same size as most tall bearded irises except for the bloom. The bloom is tiny and I find it kind of ugly unless your up close and personal with it. Then as you can see from the photo it is kind of cute.

I guess you can say the tall bearded irises have come a long way baby since this one was introduced in 1612.


On Jan 18, 2009, Joan from Belfield, ND (Zone 4a) wrote:

A natural hybrid collected in 1612