Photo by Melody

PlantFiles: Tall Bearded Iris
Iris 'Duke of Earl'

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Duke of Earl
Hybridized by Byers; Year of Registration or Introduction: 1986

» View all varieties of Iris

2 members have or want this plant for trade.

Class:
Tall Bearded (TB)

Height:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)

Hardiness:
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

Danger:
Parts of plant are poisonous if ingested

Bloom Color:
Violet/Lavender
White/Near White

Bloom Time:
Late Midseason (MLa)
Reblooming (Re)

Foliage:
Herbaceous

Other details:
Average Water Needs; Water regularly; do not overwater

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:
Unknown - Tell us

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

Click thumbnail
to view:

By rshadlow
Thumbnail #1 of Iris  by rshadlow

By Margiempv
Thumbnail #2 of Iris  by Margiempv

Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive kathy__bee On Jun 7, 2011, kathy__bee from Plano, TX (Zone 8a) wrote:

I had never had good luck with the iris I had brought in local gardening centers, as they never were true to the image on the package. So, I thought the north central Texas heat/cold were too extreme to have vibrant colors that were as advertised. But last year, I took a stab at trying this iris. I had didn't even give it a decent start with watering. I basically forgot about it. What a surprise I had when a neighbor asked for a start this summer. BAM! Spring brought heavy blooms and good vibrant color! This is an awesome iris for the Texas gardener. Not a lot of fragrance, but has a nice iris scent. Corms multiplied very well in spite of neglect and all day, full sun in our 113 degree summers. It even survived two deep, 5+ day stretches of ice with single-digit temps. Just wonderful for zone 7b-8a, dry, poor soil with little attention.

Positive Margiempv On Dec 28, 2003, Margiempv from Oro Valley, AZ (Zone 9a) wrote:

Good grower..............AND it reblooms.

Regional...

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

Tucson, Arizona (2 reports)
Yosemite Lakes, California
Plano, Texas



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