Photo by Melody

PlantFiles: Hoya, Variegated Wax Plant, Wax Plant, Porcelain Flower
Hoya carnosa 'Tricolor'

Family: Asclepiadaceae (ass-kle-pee-ad-AY-see-ee) (Info)
Genus: Hoya (HOY-a) (Info)
Species: carnosa (kar-NO-suh) (Info)
Cultivar: Tricolor
Additional cultivar information: (aka Krimson Queen)
Hybridized by Cobia; Year of Registration or Introduction: 1968

2 vendors have this plant for sale.

34 members have or want this plant for trade.

View this plant in a garden

Tropicals and Tender Perennials
Vines and Climbers

8-10 ft. (2.4-3 m)

3-6 in. (7-15 cm)

USDA Zone 10b: to 1.7 ░C (35 ░F)
USDA Zone 11: above 4.5 ░C (40 ░F)

Sun Exposure:
Light Shade


Bloom Color:
Pale Pink
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
Flowers are fragrant
This plant is suitable for growing indoors
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Patent expired

Propagation Methods:
From herbaceous stem cuttings
From woody stem cuttings

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible

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There are a total of 24 photos.
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4 positives
2 neutrals
No negatives

Gardeners' Notes:

Positive Vestia On Mar 4, 2012, Vestia from San Francisco, CA wrote:

This was trademarked and patented by Cobia, but not hybridized by him. It was in existence in Asia long before Cobia. It is a vigorous polyploid, like some of the other carnosa cv.s in circulation. It is the perfect beginner Hoya, and a "super-cleaner" of the indoor air.

Neutral JulieDB On May 5, 2010, JulieDB from Baton Rouge, LA wrote:

I'm looking for a good indoor plant for my office. Sadly the office has no windows. Would a Variegated Wax Plant do OK in a room with no sun? Thanks for tips!

Positive Don_Mader On Mar 15, 2006, Don_Mader from Victoria, TX (Zone 9a) wrote:

Mine grows in a hanging basket in bright shade, outdoors year round. The leaves vary from a dark reddish purple to a creamy white. Some remain green with a white border. The little flowers are amazing.

Positive ADKSpirit On Aug 10, 2005, ADKSpirit from Lake Placid, NY (Zone 4a) wrote:

I bought this plant at Lowes or Walmart, and it came with no tag. I was thrilled when I found out it was a hoya. Had one, not this color, years ago and gave it to a friend when I moved. I can't wait to see it flower.

Positive CasieMom On May 7, 2005, CasieMom from Des Moines, IA (Zone 5a) wrote:

Lovely plant, very low maintenance. Vigorous grower in a hanging basket planter. I moved it outside for the summer and was pleasantly surprised to discover incredible flowers today. It's hanging under a sheltered eave by the back door (facing ESE) with dappled shade from nearby trees. House wrens have made a nest in the plant so I'm watering it carefully now! I'm in Zone 8, Texas Hill Country, blazing heat in the summer. This will be the first summer outside for this plant.

Neutral PanamonCreel On Oct 20, 2003, PanamonCreel from Celaya
Mexico (Zone 10a) wrote:

Hoya carnosa 'Tricolor' is a cultivar of Hoya carnosa var. variegata. It can be distinguished by the white or cream border on its leaves. It was patented by Cobia in the 1950s and its patent expired in the 1970s. It was more commonly sold by its trademarked name of "Hoya Krimson Queen."


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

Jáltipan De Morelos,
Jones, Alabama
Phoenix, Arizona
Bee Branch, Arkansas
Alameda, California
Clayton, California
Fairfield, California
San Bernardino, California
San Francisco, California
Stamford, Connecticut
Bartow, Florida
Bradenton Beach, Florida
Hollywood, Florida
Miami, Florida
Milton, Florida
Miramar Beach, Florida
Oldsmar, Florida
Quincy, Florida
Saint Augustine, Florida
Sarasota, Florida
Kailua Kona, Hawaii
Gonzales, Louisiana
Hammond, Louisiana
Canton, Mississippi
Saint Joseph, Missouri
Hackettstown, New Jersey
Alden, New York
Whitestone, New York
Zanesville, Ohio
Hulbert, Oklahoma
Florence, South Carolina
Pickens, South Carolina
Travelers Rest, South Carolina
Austin, Texas
Hamilton, Texas
Houston, Texas (2 reports)
Katy, Texas
Lake Jackson, Texas
Plano, Texas (2 reports)
Victoria, Texas
Wimberley, Texas
Kalama, Washington

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