Hoya clemensiorum

Hoya Clemensiorum

The Hoya clemensiorum is a foliage hoya that is famous for its spectacular leaves, A native of the Sabah region in Borneo, this hoya grows pointy, dagger-shaped leaves that can reach well upto 20 cm in length, and have a dazzling emerald color that darkens to a deep sap green. Apart from the length and color, the leaves also feature a stunning dark green veination pattern with dark purple and reddish accents. These veins are also very prominent, and stand out against the surface of the leaves, giving them a textured appearance. 

The Hoya clemensiorum is prized as a foliage hoya, but it also grows fragrant flowers in starry clusters. These flowers have a contrasting coloring; reflexed cream-colored star-shaped flowers with plum borders, each measuring 10 millimetres wide and topped with a cream corona. There may be up to 35 blossoms on one umbel. The flowers attract butterflies and can remain fresh for up to three days.


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Scientific name: Hoya clemensiorum

Common names: Wax plant, porcelain flower, waxvine

Origin: Sabah, Borneo

Flower colour: Cream with plum margins

Genus: Hoya

Family: Apocynaceae (Asclepiadaceae)

Kingdom: Plantae

Type: Epiphytic EvergreenFlowering vine

How to care For

Hoya clemensiorum

The Hoya clemensiorum requires very little attention and is simple to cultivate, but you should be aware that it grows VERY slowly. To maintain healthy growth, it is necessary to provide it with high humidity (above 50%), as well as adequate bright indirect light.


  • Low watering requirements
  • High humidity, above 50%
  • Temperature range of 60-85 degrees Farenheit
  • Well-draining organic soil mix
  • Slightly acidic soil

Hoya clemensiorum Detail

Light Requirements:

  • Hoya clemensiorum can tolerate low light to bright, indirect light. However, it is important to avoid placing the plant in direct sunlight, as this can cause the leaves to become scorched. Instead, it is best to provide 6 hours of  bright, indirect light, such as near a south- or east-facing window.
  • In terms of duration, Hoya clemensorium does well with consistent light levels. It is important to avoid placing the plant in a location where it will receive inconsistent light, as this can cause the plant to become stressed and may affect its growth and flowering.
  • Overall, it is important to monitor the lighting conditions for Hoya clemensorium and make any necessary adjustments to ensure that the plant is comfortable and healthy. If the plant is not getting enough light, its leaves may become pale and the plant may not flower as well. 
  • On the other hand, if the plant is getting too much light, the leaves may become scorched or yellow. It is important to find a balance and provide the plant with the right amount of light for its needs.

Temperature Requirements:

  • This plant requires temperatures that are consistently warm throughout the entire year. Temperatures should be maintained between 60 and 85 degrees Fahrenheit (16-29 degrees C).
  • In addition, it is imperative that you refrain from leaving the Hoya in a location where the temperature is below 55 degrees for an extended period of time. Extremely low temperatures might cause your Hoya to become cold stressed and may even kill it. 
  • You can use heat lamps or warm artificial lights to maintain optimal temperature levels, especially during the winter months.

Humidity Requirements:

  • Hoya clemensiorum is native to Borneo, which is located in a climate zone that is classified as tropical. This should provide you with some insight into the climate in which your plant would be most successful.
  • The average amount of humidity in Borneo is approximately 80%, which is significantly higher than the degree of humidity that is often seen in residential environments. The fact that Hoya clemensiorum can survive in a humidity range of only 50–80% is certainly cause for celebration; nevertheless, this range also causes its growth rate to decelerate.
  • Because heaters and fireplaces begin to remove moisture from the air as the weather turns colder, it is not uncommon for the air to become excessively dry during this time of year. Due to the fact that Hoya clemensiorum plants thrive in high humidity, this may prove to be problematic for the plants.
  • Use pebble trays and humidity domes to maintain ideal humidity levels. Additionally, you can use a small humidifier and place the plant near other plants.

Watering Requirements:

  • Allowing the soil to become slightly dry in between waterings is recommended for optimal growth of the Hoya clemensiorum, just as it is for the majority of other Hoya species. That does not mean, however, that you should put the plant in water that is too deep for it or that you should allow it to become water stressed. A decent rule of thumb about watering is to do it once every seven days.
  • Before you water, you must always make sure that the topsoil has been checked to ensure that it is dry. This will help to avoid the Hoya from becoming overwatered.
  • You should cut back on the amount of water you give the Hoya clemensiorum in the fall and winter months. The idea is to not water them until the top two inches (five centimetres) of soil are completely dry.

Soil Requirements:

  • Your Hoya clemensiorum plant's success or failure is directly related to the type of soil or growing media you use. A rapid deterioration in your plant's health may result if you use the incorrect type.
  • You can your own soil mixture by combining the following ingredients:
  • 50% pumice
  • 30% indoor potting soil
  • 10% of orchid bark or coconut coir
  • 10% charcoal
  • This particular blend of soil has excellent drainage and air circulation, and it also holds onto just the perfect amount of moisture without becoming overly compact.

Fertilizing Requirements:

  • Fertilizer Hoya clemensiorum does not require a great deal of food, but you may assist in boosting their growth by providing them with a light liquid fertiliser that has been diluted to half of its original strength.
  • During the active growing season (spring and summer), this fertiliser should be administered no more frequently than once every eight weeks.
  • This particular Hoya does not benefit from excessive fertilisation because it is a slow grower and does not require it.


  • Hoya clemensiorum does not need to be repotted on a consistent basis. The majority of the time, you will only need to repot the plant once every three to five years at the most.
  • Repotting the Hoya should be done in the early spring or early summer; the plant should be well-watered and let to dry out completely. This is the time when the plant is actively growing, and it is at this time that it is significantly more likely to recover from the stress that naturally happens during the process of repotting.
  •  Hoya clemensiorum should be repotted in a container that is only two inches larger than the one it is currently in. Overpotting results in an excessive amount of "unused" soil, which retains moisture, resulting in water retention. 


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