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PlantFiles: Hoya, Harlequin Wax Plant, Porcelain Flower
Hoya pubicalyx 'Royal Hawaiian Purple'

Family: Asclepiadaceae (ass-kle-pee-ad-AY-see-ee) (Info)
Genus: Hoya (HOY-a) (Info)
Species: pubicalyx (pew-bee-KAL-iks) (Info)
Cultivar: Royal Hawaiian Purple
Additional cultivar information: (aka Chimera, Philippine Black)

37 members have or want this plant for trade.

Tropicals and Tender Perennials
Vines and Climbers

15-20 ft. (4.7-6 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:
Sun to Partial Shade
Light Shade


Bloom Color:
Magenta (Pink-Purple)
Fuchsia (Red-Purple)
Dark Purple/Black
White/Near White

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


Other details:
This plant is attractive to bees, butterflies and/or birds
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:

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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By PanamonCreel
Thumbnail #1 of Hoya pubicalyx by PanamonCreel

By PanamonCreel
Thumbnail #2 of Hoya pubicalyx by PanamonCreel

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Thumbnail #3 of Hoya pubicalyx by PanamonCreel

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Thumbnail #4 of Hoya pubicalyx by plantladylin

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Thumbnail #5 of Hoya pubicalyx by plantladylin

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Thumbnail #6 of Hoya pubicalyx by SRQHoyas

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Thumbnail #7 of Hoya pubicalyx by plantladylin

There are a total of 12 photos.
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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive c0ntrite On Jun 4, 2010, c0ntrite wrote:

Hoya should be grown outdoors but in shade. They are very easy to propagate by cuttings.

The Hoya Pubicalyx 'Royal Hawaiian Purple' (aka Philippine Black) is sometimes mistaken to Hoya Pubicalyx 'Black Dragon' but they are both different.

Positive patbirdsong On Jan 18, 2010, patbirdsong from Fort Lauderdale, FL wrote:

This plant grows easily in Ft. Lauderdale, Florida. Hoyas like to be as close to sun as possible without being in the sun. They like to be pot bound to bloom. There is a Hoya pubicalyx growing in a tree at Flamingo Gardens in Ft. Lauderdale at least 10-15 feet long. And they have small plants for sale.


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

Casa De Oro-mount Helix, California
San Diego, California
De Leon Springs, Florida
Fort Lauderdale, Florida
Ocoee, Florida
Sarasota, Florida
Tallahassee, Florida
West Palm Beach, Florida
Piedmont, South Carolina
San Antonio, Texas

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