Photo by Melody

PlantFiles: Cape Leadwort
Plumbago auriculata 'Imperial Blue'

Family: Plumbaginaceae (plum-baj-i-NAY-see-ee) (Info)
Genus: Plumbago (plum-BAY-go) (Info)
Species: auriculata (aw-rik-yoo-LAY-tuh) (Info)
Cultivar: Imperial Blue

6 vendors have this plant for sale.

6 members have or want this plant for trade.


36-48 in. (90-120 cm)

8-10 ft. (2.4-3 m)

Unknown - Tell us

Sun Exposure:
Full Sun

All parts of plant are poisonous if ingested

Bloom Color:
Light Blue
Medium Blue

Bloom Time:
Late Spring/Early Summer
Blooms all year


Other details:
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By Happenstance
Thumbnail #1 of Plumbago auriculata by Happenstance

By henryr10
Thumbnail #2 of Plumbago auriculata by henryr10

By Happenstance
Thumbnail #3 of Plumbago auriculata by Happenstance

By DaylilySLP
Thumbnail #4 of Plumbago auriculata by DaylilySLP

By DaylilySLP
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By DaylilySLP
Thumbnail #6 of Plumbago auriculata by DaylilySLP

By themikeman
Thumbnail #7 of Plumbago auriculata by themikeman

There are a total of 19 photos.
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3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive themikeman On Jul 18, 2010, themikeman from Concord, NC (Zone 7a) wrote:

I always thought this was a sky blue variety of phlox paniculata but its not. i just bought 2 this year and they are extremely healthy, infact since their isn't an actual true sky blue variety of phlox i planted these imperial blue tall plumbago in with them and it did the trick;.. now i have every color of the rainbow in my phlox garden thanks to these plumbago, and the only way to distinguish the difference, is that the plumbago has olivey or limey color looking leaves. mike.

Positive Toplady6 On Aug 20, 2004, Toplady6 from Saratoga Springs, NY wrote:

I have my Blue Plumbago in a large pot. In zone 4 we treat it as a Tropical. I bring it into the basement which stay between 45 an 50 degrees all winter. I cut it back to about 12 inches and water once a month. In the spring after frost I bring it out , fertilize and it grows to about 3 feet around and gives me a profusion of gorgeous blooms. I could not have this otherwise. So anyone who lives in a non hardy zone can enjoy this beautiful blue flower.

Positive Happenstance On Sep 11, 2003, Happenstance from Northern California, CA wrote:

Better suited to an open space or wild land setting, grows very large with normal water and fertilizer. Hummers love it.


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

Jones, Alabama
Phoenix, Arizona
Tucson, Arizona
Little Rock, Arkansas
Clayton, California
Los Angeles, California
San Leandro, California
Temecula, California
Fort Lauderdale, Florida
Fort Myers, Florida
Gainesville, Florida (2 reports)
Palm Coast, Florida
Saint Petersburg, Florida
Tallahassee, Florida
Tampa, Florida
Umatilla, Florida
West Palm Beach, Florida
Savannah, Georgia
Bogalusa, Louisiana
Saint Francisville, Louisiana
Zachary, Louisiana
Florence, Mississippi
Concord, North Carolina
Leland, North Carolina
Cincinnati, Ohio
Broken Arrow, Oklahoma
Bryan, Texas
Bulverde, Texas
Georgetown, Texas
Manvel, Texas
Powderly, Texas
San Antonio, Texas

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