Rhododendron Species, Dwarf Rhododendron

Rhododendronimpeditum

Family
Ericaceae (er-ek-AY-see-ee)
Genus
Rhododendron (roh-do-DEN-dron)
Species
impeditum (im-ped-EYE-tum)
Synonym
Rhododendron litangense
Spacing
6-12 in. (15-30 cm)
Hardiness
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Sun Exposure
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Full Sun
Bloom Color
All parts of plant are poisonous if ingested
Bloom Time
Blue-Violet
Foliage
Late Winter/Early Spring
Mid Spring
Other Details
Other details
Evergreen
Shiny/Glossy
Seed Collecting
Category
From softwood cuttings
From semi-hardwood cuttings
Direct sow as soon as the ground can be worked
By grafting
By simple layering
By air layering
Patent Information
Foliage Color
Allow pods to dry on plant; break open to collect seeds
Bloom Characteristics
Water Requirements
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

Sausalito, California

Lexington, Kentucky

Watertown, New York

, Newfoundland and Labrador

Euclid, Ohio

Hilliard, Ohio

Oklahoma City, Oklahoma

Coos Bay, Oregon

Portland, Oregon

Dover, Pennsylvania

Sweetwater, Tennessee

Saint Albans, Vermont

Manchester, Washington

Sequim, Washington

Spokane, Washington

Woodinville, Washington

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Gardener's Notes:

5
positives
2
neutrals
2
negatives
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A
A
Sequim, WA | April 2017 | positive

Interesting to see all the trouble that folks are having with this plant. I have had five of them for anywhere from 5-15 years, and they...Read More

S
Louisville, KY (Zone 6b) | April 2017 | positive

This species has been used to produce most of the "blue" hybrid Rhododendrons.

J
Lexington, KY | May 2016 | neutral

Bought 4 last year because the nursery said they would take shade. Came back this year butonly a few flowers on one plant. The one that b...Read More

T
Concord, NC (Zone 7a) | July 2010 | positive

extremely beautiful, but also extremely sickly and sensitive, it's probably going to die, as it is turning yellowy-brown and brittle. I h...Read More

E
E
Royal Oak, MI (Zone 6a) | June 2009 | neutral

I bought two of these from a big box store before reading all the other comments but went ahead and planted them thinking I didn't have m...Read More

T
Hilliard, OH (Zone 6b) | December 2008 | positive

wow, im surprized at the negative comments, i didnt realize how easy it is to kill these, i bought one 2 years ago, stuck it in the groun...Read More

E
Annapolis, MD | December 2008 | negative

Very cool dwarf, but I also have 2 out of 3 dead....a very picky shrub......
Annapolis,MD

P
Winnetka, IL | August 2008 | negative

I have to say, I have tried this plant several times, and it just won't stay alive. It's planted in raised beds full of azaleas and rhod...Read More

T
St. John's, NL (Zone 5b) | March 2004 | positive

Another gem for the rockery, this dwarf rhododendron has flowers very close to blue, a rare colour for rhodododendrons. the foliage is a...Read More

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