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PlantFiles: Tall Bearded Iris
Iris 'Zurich'

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Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Zurich
Hybridized by Byers; Year of Registration or Introduction: 1989

» View all varieties of Iris

3 members have or want this plant for trade.

Class:
Tall Bearded (TB)

Height:
24-36 in. (60-90 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

Bloom Color:
White/Near White

Bloom Time:
Early midseason (EM)
Midseason (M)
Reblooming (Re)

Foliage:
Herbaceous

Other details:
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting

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:
Allow pods to dry on plant; break open to collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Awards (if applicable):
Unknown - Tell us

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By laurief
Thumbnail #1 of Iris  by laurief

By laurief
Thumbnail #2 of Iris  by laurief

By laurief
Thumbnail #3 of Iris  by laurief

By EROCTUSE2
Thumbnail #4 of Iris  by EROCTUSE2

By Redrock069
Thumbnail #5 of Iris  by Redrock069

Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Margiempv On Mar 26, 2006, Margiempv from Oro Valley, AZ (Zone 9a) wrote:

Reblooms, reblooms, reblooms! Healthy, great growing plant. Recommended.

Positive laurief On Oct 21, 2003, laurief from Deer River, MN (Zone 3b) wrote:

Very few tall beardeds (TBs) can survive my growing conditions. This northern MN zone 3b climate inflicts severe, extended cold during the winter months, often with little snow cover for insulation. Summer temps can exceed 90 degrees F. My soil is very heavy, compacted clay with a slightly acid pH. A large local deer population frequently tramples and sometimes grazes on my irises in early spring and late fall. Iris borers are present but managed successfully with a granular systemic grub control product. Weeds are abundant and only occasionally beaten back by an admittedly lazy gardener (yours truly). Fertilization is inconsistent, when provided at all. Most TBs here are growing with less than 6 hrs of sun per day, so growth and bloom are not what they could be under full sun conditions. I have lost hundreds of weaker TB cultivars over the years, so the few that have managed to survive are worthy of high praise.

ZURICH is my favorite white TB. It is extremely vigorous and a reliable bloomer (reported rebloomer in USDA zones 5-10). It does occasionally suffer from bacterial soft rot but outgrows it readily without treatment. It is such a rampant grower, in fact, that it will crowd itself out, exhaust its soil, and quit blooming if not divided regularly (I do have this one planted in better soil in a full sun location). I highly recommend this cultivar.

Laurie

Regional...

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

Tucson, Arizona
Oskaloosa, Kansas
Wichita, Kansas
Deer River, Minnesota
Conway, South Carolina
Greeneville, Tennessee
Logan, Utah



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