Krimson Princess Hoya, Wax Plant, Porcelain Flower
Hoya carnosa 'Rubra'

Family: Asclepiadaceae (ass-kle-pee-ad-AY-see-ee) (Info)
Genus: Hoya (HOY-a) (Info)
Species: carnosa (kar-NO-suh) (Info)
Cultivar: Rubra
Additional cultivar information:(aka Krimson Princess, Strawberries and Cream)
Hybridized by Cobia
Registered or introduced: 1970

Category:

Tropicals and Tender Perennials

Vines and Climbers

Height:

8-10 ft. (2.4-3 m)

Spacing:

3-6 in. (7-15 cm)

Hardiness:

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Light Shade

Danger:

N/A

Bloom Color:

Pink

Red

White/Near White

Bloom Time:

Mid Summer

Late Summer/Early Fall

Mid Fall

Foliage:

Variegated

Smooth-Textured

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:

Non-patented

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

Regional

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

San Francisco, California

Brooksville, Florida

Chiefland, Florida

Saint Cloud, Florida

Tampa, Florida

Whitestone, New York

Zanesville, Ohio

Verona, Pennsylvania

Houston, Texas

Humble, Texas

Lake Jackson, Texas

show all

Gardeners' Notes:

2
positives
1
neutral
0
negatives
RatingContent
Positive

On Sep 11, 2010, jskyieeyes3 from Saint Cloud, FL (Zone 9b) wrote:

i've had my hoya rubra for a little over a year. it was one of my starter plants. i love the colorful foliage, and the "tropical" feel it adds to my porch. it hasn't flowered yet, but i'm waiting patiently! =)

Positive

On Dec 6, 2004, ceedub from Whitby, ON (Zone 5b) wrote:

I've had this plant for about 7 years. The varegated foliage with green on the edges is lovely, but the flowers are what totally amazed me. It is a cultivar of carnosa, which normally has pale pink flowers with a darker centre - the flowers of this plant are a dark, almost raspberry colour, with the centres being very, very dark. They have a very light scent compared with some of my other hoyas.

Neutral

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

Hoya carnosa 'Rubra' is said to be a cultivar of Hoya carnosa var. picta. It can be distinguished by the green leaf borders. It was a patented variety put out by Cobia in Florida (U.S.) The patents expired about 25 years ago. It was more commonly sold by its trademarked name "Hoya Krimson Princess."