Many house plant enthusiasts and gardeners often show their interest in Hoya Pubicalyx. Like trachyandra tortilis, the Hoya Pubicalyx is also a succulent vine. It has waxy, dense, shiny leaves and stems and blooms star-shaped flowers. 


If you are interested to know more about this plant, we are here with a detailed guide about Hoya Pubicalyx. Below, we will cover everything about this plant, such as Hoya Pubicalyx varieties, different ways to care, features, where to buy, how often to water Hoya, and so on. 

Hoya Pubicalyx plant with roots

Source: Depositphotos 


What is Hoya Pubicalyx 

In the Hoya genus, which contains about 600 to 700 evergreen plant varieties, Hoya Pubicalyx is one of those flowering species. It belongs to the Plantae Kingdom, Gentianales Order, and comes under the Apocynaceae Family. The Hoya Pubicalyx is native to many parts of the Philippines, and its flowers are even displayed on the Philippine five-centavo coin. 


Like monstera dubia, the Hoya Pubicalyx is a climbing vine plant that contains soft stems, branches and yields flowers throughout the year. This plant has succulents, and the leafage is shaped like a lance head foliage that easily thrives in a vining habit. Due to its glossy, waxy, and thick leaves, the Hoya Pubicalyx and its varieties are also called a wax plant. The mature leaves are narrow in shape, and the length of these leaves varies from 5 to 12 centimeters, and the width is about 6 centimeters wide. 


Hoya Pubicalyx is a flowering plant, and a new plant can start blossoming within one or two years. Plus, it will produce flowers during the spring and summer months, which will give a sweet aroma at nighttime. These star-shaped flowers are tiny and thrive in groups on flower shafts. Every cluster contains up to 40 flowers, and various types of Hoya Pubicalyx varieties generate different colored flowers. 


After the flowers have fallen off the Hoya Pubicalyx plant, it is better not to cut off the flower stalk. Due to that, the plant does not have to use up extra energy to produce a new shaft in every blooming season. The Hoya Pubicalyx generates a natural plant pigment called Anthocyanin. This pigment can safeguard pale, young leaves from severe sunlight and protects mature, aged leaves from cold and harsh light.

Hoya Pubicalyx flowers

Source: Depositphotos

Features & benefits of Hoya Pubicalyx 

The Hoya Pubicalyx is portable, and the flower clusters will make it totally attractive. Below we will talk about a few dominant features of the Hoya Pubicalyx plant: 

  • In the New Generation Currency Series of the Philippines, the flowers of Hoya Pubicalyx are present on the Philippine five-centavo coin.  
  • Generally, the flowers are grown in clusters, and every group contains up to 40 flowers, and they will dry up after eight days. 
  • Every small flower of the Hoya Pubicalyx plant is about 0.4 cm in size, and the clusters measure approximately 2 inches. 
  • The leaves of Hoya Pubicalyx are often speckled with flecks of silvery variation like the monstera siltepecana. The stems can grow in different shades of purple based on the total amount of sunlight they received. 
  • The Hoya pubicalyx roots are epiphytic, and they thrive on trees or plants. When planted in soil, they are usually shallow.
  • Sunlight is essential for the Hoya Pubicalyx plant to start flowering. Every day, a minimum of 6 hours of bright and indirect sunlight is necessary for this plant.


Undoubtedly, Hoya Pubicalyx is a popular houseplant. Growing this Hoya plant is also connected to a few benefits, which are: 

  • The Hoya Pubicalyx produces a fragrant smell and is used to make liquid perfumes, powders, body lotions, and various aromatic beauty products. 
  • This Hoya plant is available in almost all plant nurseries due to its high demand. 
  • Hoya Pubicalyx plants are an extraordinary and natural remedy to eliminate pollutants in the indoor habitat. 
  • In the moderate temperate areas, the Hoya Pubicalyx is grown as a prominent houseplant for its leafage. 
  • Another benefit is that the Hoya Pubicalyx is one of the easiest to care for houseplants which does not need heavy maintenance. 

Cluster of Hoya Pubicalyx flowers

Source: Depositphotos 

Difference between Hoya Pubicalyx and Hoya Carnosa 

The Hoya Pubicalyx is often confused with Hoya Carnosa due to their similar external looks. Many often assume them as different varieties of each other. Hence, we will incorporate the primary differences which can distinguish Hoya Pubicalyx and Hoya Carnosa: 


In comparison to the long leaves of the Hoya Pubicalyx, the leaves of Hoya Carnosa are a little short and a bit wider. Besides that, the Hoya Carnosa leaves are thicker, and the Hoya Pubicalyx have much thinner leaves. 


Many Hoya Pubicalyx varieties present in nurseries have light speckles or splashes of silverish-gray. But, the Hoya Carnosa plant is available in either solid green or variegated. The Hoya Carnosa in its usual (green) form is less common. However, the Hoya Pubicalyx is one of the most common and inexpensive Hoya species. 


The Hoya Carnosa varieties include krimson princess, krimson queen, Chelsea, Argentea Princess, Compacta (Indian Rope), Wilbur Graves, Exotica, Tri-Color, and Grey Ghost. Though there are numerous Hoya Pubicalyx varieties, some of the most common ones are Black Dragon, Pink Silver, Red Buttons, and Royal Hawaiian Purple. 


The Hoya Pubicalyx Splash is a bold silver-speckled cousin to the well-known Hoya Carnosa. The leaves are a bit longer, extra pointed, and it grows dark mauve flowers. Plus, it thrives at a slow pace and forms lengthy twining vines, which will ascend or trail off from the surface. 

Variegated foliage of Hoya Pubicalyx

Source: Depositphotos 


How Big Does a Hoya Pubicalyx Get 

On average, a developed Hoya Pubicalyx plant can grow nearly anywhere between 8 to 10 feet (3 meters) long. Though it has narrow leaves, they can thrive from 5 to 12 centimeters (4 inches) in height. The leaves are about 6 centimeters (2.4 inches) wide. Hoya Pubicalyx plant leaves develop a new growth form on the tough semi-woody stems.


Types of Hoya Pubicalyx

Hoya Pubicalyx is one of the easy to care for houseplants that will make the surroundings beautiful. There are different Hoya Pubicalyx types, and each of them has unique colored flowers and leaves. Here are some of the well-known varieties: 


Pink Silver

  • This cultivar has green leaves with light silvery variegation. 
  • If they get adequate sunlight, the leaves of this variety will turn into slightly pinkish silver. 
  • The Pink Silver Hoya Pubicalyx flowers are mostly pale red in color and have pink centers.


Red Button:  

  • This plant also has green leaves, green stems, and a few leaves tend to have patches of purple or red colors. 
  • The Red Button variety blossoms dark purple flowers, which will have slightly red centers.  


Black Dragon

  • Unlike other varieties, the Black Dragon plant has only lime-green leaves without any speckles.  
  • It will start blooming fragrant and tiny star-shaped flowers during the springtime. 
  • These flowers are primarily black in color with red centers. 


Royal Hawaiian Purple

  • The leaves of this variety are green in color and have mild smudge patterns in silvery, grey colors. 
  • They will grow in clusters, and these star-shaped flowers can blossom in pinkish-red to black shades. 
  • Rarely, the Royal Hawaiian Purple plant will have different colored flowers in a single group. 


Bright One

  • The Bright One variety has long and dark olive-green leaves with silvery patches. 
  • The new blossoms will have reddish-brown, and the mature flowers will retain bright blue-red corolla with rose-colored centers. 


According to Christine Burton, other types of Hoya Pubicalyx varieties include White Dragon, Splash, Dapple Gray, Pink Dragon, Jungle Garden, and Silver Sheen. 

Bright red centered Hoya Pubicalyx flowers

Source: Depositphotos 


How much does a Hoya Pubicalyx cost?  

The cost of a new Hoya Pubicalyx sapling of about 4 inches can range from $10 to $30 based on your location. You can buy it from local or online plant nurseries, gardening stores, houseplant websites, and more. Depending on the cultivar, some Hoya Pubicalyx varieties can be expensive, while others can be purchased at an affordable price. 


How to propagate a Hoya Pubicalyx  

The ultimate time for Hoya Pubicalyx propagation is during the summer and spring seasons. If possible, try to reproduce the plant in the early days of the spring months so that the new plant will grow healthily. Follow the below steps to know how to propagate Hoya Pubicalyx: 


Step 1: Gather a sterilized knife, garden shear, or scissors to make cuttings in the mother plant. 

Step 2: Watch the plant thoroughly and make a cutting of 5 to 7 inches on the growing end of the branch that has nodes.  

Step 3: Peel off the leaves at the low end and put the cutting/s under the shade for a few minutes, so that the tissue will repair.  

Step 4: Take the cutting and put the nodes of the stem cutting beneath the soil about 4 inches deep. 

Step 5: After planting the cutting in the soil, pour a generous amount of water three times a week. Make sure that the soil retains sufficient moisture till the growth is visible. 

Step 6: Move the pot into a humid and warm area that gets adequate indirect sunlight. 

Step 7: In general, the growth of the new roots may begin in about three or four weeks. 

Step 8: When the roots are developing from the cutting, you can repot it in a shady bright area to safeguard the freshly growing leafage. 


Water Propagation 

With the above method, you can easily propagate the Hoya Pubicalyx in the soil. However, you might have heard of water propagation, right? Here, we will talk about how to reproduce the Hoya Pubicalyx plant in water.


  • Propagation of the leaf-cutting and stem tip cutting of Hoya Pubicalyx in water is possible. 
  • All you have to do is put the cutting in a water cup or bowl. 
  • Make sure to keep the nodes in the water and keep the leaves above the water level. 
  • You can change the water in the bowl once a week or whenever it looks dark. 
  • Within some weeks, you can observe the growth of new roots at the end of the cutting, present inside the water. 

Hoya Pubicalyx stem

Source: Depositphotos 


How to Care for Hoya Pubicalyx 

The Hoya Pubicalyx is an evergreen perennial climbing vine plant. It is one of the famous indoor plants which does need heavy maintenance. All types of Hoya Pubicalyx have similar caring requirements. In the below section, we will talk about the Hoya Pubicalyx splash care: 


Soil Requirements 

The Hoya Pubicalyx plant grows well in light, nutrient-rich, airy, and well-drained soil. It is also good to add a mixture made of the orchid mix, peat, and perlite to the soil. 


Water Requirements 

This plant needs a moderate amount of water. It is good to water the Hoya Pubicalyx plant once a week in the winter months and thrice a week in the summer season. 


Instead of watering on the plant and leaves, it is better to water around the soil. Make sure not to pour excessive water as it causes moist soil, which leads to root rot.  


Humidity Requirements 

In general, this climber grows well in slight humidity. Nearly 70% of moisture content in the surrounding air is excellent for Hoya Pubicalyx. During dry days, make sure to keep the plant near to the humidifier. 


Sunlight Requirements 

For best results, you can put the Hoya Pubicalyx plant near the area that gets the optimal amount of indirect sunlight. In the wild, Hoya Pubicalyx plants are usually grown near the gaps between trees.   


If the plant is placed under direct sunlight, it is best to cover that Hoya Pubicalyx plant using 50 to 80% cloth to provide shade. Do not keep the plant under extreme direct sunlight at noon. Early morning sunlight is good for the plant, which leads to the growth of brightly colored foliage. 


Temperature Requirements 

The Hoya Pubicalyx plant grows well at the temperature of 30 to 40 degrees Fahrenheit. This climber plant is quite sensitive to frosty conditions. Thus, it is better to shift this plant to warmer areas if the surrounding temperature drops below 10 degrees Fahrenheit. 


Fertilizer Requirements 

It is not mandatory to add fertilizers to this plant. However, if the growing soil lacks enough nutrients, you can add fertilizers, such as compost tea, dilute fish emulsion, and many more. 


Adding the fertilizer will make the Hoya Pubicalyx plant grow well and have bright leafage. When the plant is near the flowering season, you can add nutrient-rich fertilizers from time to time. 


Pot Requirements 

If you want to grow the plant in a pot instead of direct soil, it is best to choose a loose drainage terracotta plant pot. Avoid planting the Hoya Pubicalyx in large containers and prefer small pots. 

               Hoya Pubicalyx flowers

Source: Depositphotos 


Where to buy Hoya Pubicalyx 

The Hoya Pubicalyx is not a rare plant and can be found in almost every plant nursery. But, specific Hoya Pubicalyx cultivars could be tough to find. Many of the local plant nurseries sell this plant and maintain plenty of them in stock. In addition to that, you can buy the Hoya Pubicalyx online as well.  


Big E-commerce companies, online plant stores, and garden tool stores also sell this Hoya plant. You can search “Hoya Pubicalyx black dragon for sale” in the search bar and check all the relevant portals to buy the best plant.  


Bottom Line 

The Hoya Pubicalyx is an incredible houseplant for beginners because it does need high-end maintenance and is easy to care for. In addition to that, this plant blossoms beautiful clusters of flowers which adds fragrance and charm to your home. Also, the Hoya Pubicalyx is easily accessible in almost all nurseries, online plant stores at an inexpensive price. 


If you want to make a beautiful indoor area using houseplants, you can grow the Hoya Pubicalyx jointly with other flowering plants. Plants such as African violets, Peace lilies, Longevity spinach, and Christmas cactus produce some of the beautiful flowers. 


Hi there! I’m Guy, the guy behind Guy About Home (that’s a lot of guy’s). I’m just your average guy (ok, I’ll stop) living in the USA who is really interested in making and doing.