Standard Dwarf Bearded Iris 'Raspberry Jam'


Family: Iridaceae (eye-rid-AY-see-ee) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Raspberry Jam
Hybridized by Niswonger
Registered or introduced: 1980
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Standard Dwarf Bearded (SDB)


6-12 in. (15-30 cm)

12-18 in. (30-45 cm)


9-12 in. (22-30 cm)

12-15 in. (30-38 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:

Fuchsia (Red-Purple)


Bloom Time:

Midseason (M)



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)

Allow cut surface to callous over before planting

Seed Collecting:

Bag seedheads to capture ripening seed

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):

Honorable Mention

Award of Merit

Cook- Douglas Medal (SDB)

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:

Montrose, Colorado

Macy, Indiana

Hagerstown, Maryland

Deer River, Minnesota

Los Alamos, New Mexico

Coshocton, Ohio

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Gardeners' Notes:


On May 3, 2008, TBGDN from (Zone 5a) wrote:

This one came to me from laurief in Deer River, MN. It has adjusted well here in it's 'warmer' home, and has now increased to a full-size clump. Well worth having here in IN.

AIS Check List information: (O. D. Niswonger, R. 1980) Sdlg. 7-78. SDB, 12" (30 cm), M; Red violet with deeper spot on F.; white blue beard. Rangerette X Amazon Princess. Cape Iris 1981, HM 1983, AM 1985, Cook-Douglas 1988.


On Feb 16, 2008, Joan from Belfield, ND (Zone 4a) wrote:

Awards: HM 1983, AM 1985, Cook-Douglas 1988


On Jun 14, 2005, Elizabethtown from Hagerstown, MD (Zone 6a) wrote:

Niswonger, 1980. 12" (30 cm). Blooms M. Red violet with deeper spot on F.; white blue beard. (Rangerette X Amazon Princess).

Plant was a fussy starter here but once established it has become a nice carefree addition to the garden. Lovely shade of dark raspberry.