Photo by Melody

PlantFiles: Tall Bearded Iris
Iris 'Speed Limit'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Speed Limit
Hybridized by Lauer; Year of Registration or Introduction: 1991

» View all varieties of Iris

One member has or wants this plant for trade.

Tall Bearded (TB)

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

15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 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
Sun to Partial Shade

Parts of plant are poisonous if ingested

Bloom Color:
Unknown - Tell us

Bloom Time:
Late Midseason (MLa)


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:

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 jfrizzell
Thumbnail #1 of Iris  by jfrizzell

By doss
Thumbnail #2 of Iris  by doss

By littlebrook15
Thumbnail #3 of Iris  by littlebrook15


No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral littlebrook15 On May 26, 2008, littlebrook15 from Rock Tavern, NY wrote:

It's a pretty Iris, not as blue as some pictures show, and not as purple as others. It's really just a nice medium violet. It needs staking, though, mine is flopping over.

Neutral doss On Mar 22, 2005, doss from Stanford, CA (Zone 9b) wrote:

(Lauer, 92) Early to Mid season bloom. 38" Rebloom and fragrant.
"Standards are medium blue with a white infused midrib. Falls are medium blue with a white splash at the beard end. Beards are white. Continuous rebloom beginning in summer through fall. American Iris Society Honorable Mention '94; Award of Merit '96."
Cooley's Iris Garden note.

Sutton's Iris Garden reports reliable rebloom to zone 5.


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

Tucson, Arizona
Wichita, Kansas
Rock Tavern, New York

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