PlantFiles is getting a new look! Just in time for spring, we're rolling out a new look for the best online plants database. It will also work with your smart phones and mobile devices, so now you can take it with you on garden center visits or botanical garden tours. Questions or comments? Please post them here.

Tall Bearded Iris
Iris 'Sierra Grande'

Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Sierra Grande
Hybridized by Schreiner
Registered or introduced: 1992
» View all varieties of Iris

Class:

Tall Bearded (TB)

Height:

36-48 in. (90-120 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

18-24 in. (45-60 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

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Medium Blue

White/Near White

Bloom Time:

Midseason (M)

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:

Non-patented

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):

Honorable Mention

Award of Merit

Regional

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

Oroville East, California

Macy, Indiana

Anacoco, Louisiana

Saint Louis, Missouri

Beatrice, Nebraska

Lawton, Oklahoma

Salem, Oregon (2 reports)

Vancouver, Washington

Madison, Wisconsin

show all

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Positive

On Feb 18, 2006, TBGDN from (Zone 5a) wrote:

This information was provided by the American Iris Society. I've grown this iris several years now without any negative factors. It is a very beautiful iris growing to about 36" here. It has a well coordinated combination of colors, and is very nicely ruffled. Big pastel beards are a bonus.

Neutral

On Dec 16, 2005, Joan from Belfield, ND (Zone 4a) wrote:

Awards: American Iris Society Honorable Mention '94, Award of Merit '96