Hoya pubicalyx, often called the wax plant, is a popular houseplant known for its attractive foliage and unique, star-shaped flowers. This vining plant, native to the Philippines, offers a wide array of varieties, each with distinct characteristics.
Understanding Hoya Pubicalyx Traits
Hoya pubicalyx cultivars vary primarily in their leaves and flowers. Leaf characteristics include differences in shape, size, and coloration. Many varieties display silver flecking, known as “splash,” which can range from subtle speckles to extensive coverage. This splash can appear pinkish or reddish under certain light conditions.
Beyond foliage, Hoya pubicalyx flowers also exhibit distinctions. All varieties produce clusters of fragrant, star-shaped blooms, with colors varying significantly. These waxy flowers range from light pink to deep burgundy, purple, or near black. The corona, or inner crown, often presents a contrasting color.
Popular Hoya Pubicalyx Varieties
Several Hoya pubicalyx varieties have gained widespread popularity among plant collectors for their unique aesthetic qualities. ‘Pink Silver’ is recognized for its deep green, leathery leaves adorned with pale grey or silver flecks that can take on a pinkish hue in brighter light. Its fragrant flowers are typically a dull silvery pink with a darker rose pink center. This variety is a vigorous grower.
‘Red Buttons’ is known for its smaller leaves and dark, almost black, star-shaped blooms with red centers. The flowers’ dark appearance is often due to dark red nectar absorbed by the corona. New growth can also emerge with a deep burgundy tint.
‘Black Dragon’ stands out for its exceptionally dark foliage and nearly black flowers. Its thick, waxy leaves are deep green, appearing almost black with ample light. The star-shaped blooms are very dark red to almost black, often with a subtle fragrance.
The ‘Splash’ variety is known for its prominent silver flecking across its deep green, waxy leaves. The silver variegation is often heavy, creating a speckled appearance. Its fragrant flowers typically range from pink to deep maroon, contrasting with the striking foliage.
‘Royal Hawaiian Purple’ is noted for its deeply colored flowers and unique new growth. Its star-shaped flowers can appear dark purple to almost black, sometimes mixed with pink tones within the same cluster. Juvenile leaves often display bronze or purple highlights, maturing into green leaves with silver flecking.
General Care for Hoya Pubicalyx
Most Hoya pubicalyx varieties share similar care requirements, making them relatively straightforward to cultivate indoors. They thrive in bright, indirect light, ideally receiving at least six hours daily. While they tolerate some direct morning sun, intense midday sun can scorch their leaves. Water when the top two inches of soil feel dry, as these plants are somewhat drought-tolerant. Overwatering can lead to root rot, so ensure the potting mix is well-draining, often benefiting from amendments like orchid bark or perlite.
Hoya pubicalyx prefers moderate to high humidity, ideally between 60% and 70%, though they adapt to average household levels. Temperatures between 60°F and 85°F (15°C to 29°C) are suitable for growth. During the growing season, a diluted, potassium-rich liquid fertilizer can be applied monthly, but feeding should be reduced in winter.
Finding Hoya Pubicalyx Varieties
Locating specific Hoya pubicalyx varieties often involves exploring various plant retail avenues. Online plant shops frequently offer a wide selection, including rarer cultivars, and can ship directly. Local nurseries and garden centers may also carry common varieties. Plant swaps and online communities dedicated to houseplants can be resources for finding unique or hard-to-find specimens.
When purchasing, especially online, verify the variety’s specific traits by comparing images and descriptions for accurate identification. Some varieties might be more expensive or less readily available due to their rarity or demand. Checking reviews and seller reputations is advisable.