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Hoya Nummularioides: Ultimate Care Tips [With Buying Guide]

Don’t let the big and complex name of Hoya nummularioides startle you. These plants are cute and famous for their waxy foliage and great scented flowers.

This plant can be a huge boost to the decoration of your house if you properly care for this plant and let it flourish to its fullest.

Hoya nummularioides need bright, filtered sunlight with temperatures ranging from 65°F to 90°F and an ideal humidity of 50-70%. They need chunky, well-draining soil and fertilizer once a month during spring and summer. 

Hoya Nummularioides
Hoya nummularioides (Source: Etsy)

Hoya has different species spread across the world. Each one of them needs a different type of care and conditions.

Let’s see where you can buy the plant and what things you need to care about.

Overview of Hoya Nummularioides

Common NamePorcelain Flower Hoya
Scientific NameHoya nummularioides
OriginThailand, Cambodia, and tropical Asia
FamilyApocynaceae
USDA Zones10
FlowerTiny white flower with pinkish-red corona
FoliageRound, small succulent leaves with tiny flowers
Blooming TimeThroughout late summer and fall
HeightUp to 3 meters tall
FragranceSweet fragrance
AvailabilityNot so rare
ToxicityNon-toxic to pets and humans

Where to Buy Hoya Nummularioides?

Compared to other Hoya species, Hoya nummularioides are pretty easy to find. You may find these plants in your local nursery if you search hard enough.

But going in person and looking for this cute plant can get quite tedious. Alternatively, you can order this plant online and get it delivered to your home.

Many online sites deliver this plant globally. Let’s see some of them below.

StoreDelivery ServicesPrice
EtsyShipping in 1 or 2 weeks.$20 - $50
Gabriella PlantsYou'll get it delivered in 3-7 business days$16
LogeesIt takes 5-7 business days to deliver.$29.95
Tropics At HomeYou'll get your plant in 7-14 days$8.37

Getting this plant delivered to you may not be a big task for these online companies.

Hoya Nummularioides: Ultimate Growing & Care Guide

Look below for what your plant prefers and what is their optimum conditions.

FactorsOptimal Conditions
Sunlight and LocationBright, filtered and indirect light
About 2 hours of sun in morning or evening
WateringWater regularly in the growth phase
Temperature65°F - 90°F (18°C - 32°C)
HumidityRanges from 50% to 75%
Soil MixturePotting soil, Orchid mix, Perlite
Soil pH6.1 to 7.5
FertilizationOnce a month during spring and summer
Never during fall and winter
Growth HabitsUp to 3 m height
Flowering SeasonFall and Spring
Pot TypeTerracotta Container or ornamental hanging basket
PropagationStem cutting and Seed
RepottingEvery 2-5 years
PruningLight pruning, few times a year

1. Adequate Sunlight and Proper Location

Hoya nummularioides grow on vines and are very close to the light source. But it would be best for them to avoid direct sunlight.

Generally, these plants prefer bright, filtered, but indirect light and can use at least two hours of morning or evening sunlight for optimum growth.

It would be best to locate the plant somewhere with a good light source.

Placing the plant in harsh, direct, or scorching sunlight will lead the plant to stress, and the plant will start to exhibit symptoms like floppy leaves.

Inadequate sunlight will force the plants to perform etiolation, which is the process of stretching their stem faster than usual in search of a light source.

Low light will also cause the plant to lose its luscious green color and die eventually. Other effects include reduced photosynthesis, dropping, yellowing plants, etc.

 

Sunlight for Indoor Plants
Sunlight for Indoor Plants (Source: UGA Extension)

Tips for Maintaining Adequate Light

  • Place the plant in an east-facing or west-facing window. A northern window will be fine unless it gets too dark in winters.
  • You can provide it with sufficient light it needs by hanging it next to a windowsill.
  • Alternatively, you can place the plant in a window that gets shaded by a nearby tree. Doing this will emulate its growth in its natural habitat.
  • Avoid letting the plant have a southern exposure. Scorching summer sunshine will burn the foliage.
  • If you want to place the plant in a southern exposure, make sure you filter the plant using drapes and curtains.
  • Use artificial lights like LED, grow, or fluorescent lights during low light conditions like winter or overcast days.

2. Adequate Watering

The water requirements of Hoya nummularioides are low compared to other plants, but that doesn’t mean that it would do good with extended periods without water.

Its thick, semi-succulent leaves store moisture, and thus the plant can survive a certain period without water.

Generally, Hoya nummularioides need water constantly in their growing phase. But make sure to water the plant only when the top 2 inches of soil is completely dry.

You should water the plant frequently during summer as the soil dries quicker due to sunlight and other factors. However, it’s just the opposite during winter.

During winter, you should water the plant only once.

The water requirement generally depends on sunlight, temperature, and humidity levels.

Quick Note: Don’t let the soil stay bone dry for a longer period, or the plant will start showing signs of dehydration.

Avoid overwatering the plant as the plant is too sensitive to water and may showcase symptoms of root rot and other fungal diseases.

Problem Due to Watering Issues

  • Overwatering: Buds will not form. Even if they do, they will drop off. Leaves will start to wilt.
  • Underwatering: Petioles and leaf tips look brown and yellow.
Brown leaf in Plants
Brown leaf in the plant (source: Wikipedia)

Tips for Watering Hoya Nummularioides Properly

  • Water the plant from top to bottom regularly for the first couple of months.
  • After the plant is mature, water the plant once a week or a couple of weeks.
  • Be on guard about the brown and yellow leaves as they may be the sign of underwatering.
  • Water the plant regularly during hot weather as the soil loses moisture quickly.
  • Use a soil moisture meter to check for the moisture in the soil and water accordingly.
  • Use water at room temperature to water the plant. Using too hot or too cold water can damage the plant.
  • Try using distilled or rainwater. Using impure water can damage the roots. Contaminated water contains salt, accumulating on the roots and damaging them.
  • Empty the saucer beneath the plant to avoid standing on too much water.

3. Ideal Temperature

The temperature affects the growth of the plant. Whether the plant grows fast or slow, it comes down to temperature.

A temperature range perfect for Hoya nummularioides is between 65°F and 90°F (18°C to 32°C), which is closest to average indoor temperature.

If the temperature drops below 60°F (15°C), the plant’s growth gradually slows, and at a point, the growth suddenly stops.

Higher temperatures (above 95°F) will affect flowers’ growth and cause the leaves to decay.

Temperature in relation to plant's growth
The temperature in relation to plant’s growth (Source: ResearchGate)

There are certain internal functions, like chemical reactions, only if the plant grows at its ideal temperature. Anything above or below will hinder the plant’s growth.

These plants are native to Thailand and Cambodia, where there is no snowfall even in winter, so it is not accustomed to snowfall.

It would be wiser to bring them inside during such conditions.

Tips for Maintaining Optimum Temperature

  • If you live in hot climates, do not leave the plant without shades to avoid scorching of leaves.
  • Also, you can increase the humidity content around the plant in hot temperatures.
  • Do not place the plant too close to the window during winter, or the plant may succumb to frost.
  • You can use plastics and insulating bags during winter to cover the plant.
  • Use heat pads and place them beneath the pot to keep the plant warm during winter.
  • If the weather is too hot, keep the plant in a room with air conditioning.

4. High Humidity

Hoya nummularioides are native to rainforests where the humidity content is relatively high.

Plants go through transpiration, distributing water and minerals evenly across the plant as it grows. This plant is no different.

Generally, Hoya nummularioides prefer relative humidity ranging from 50% to 75% and will flower more if air humidity is maintained up to 60%.

These plants have succulent-like foliage, which helps the plant to stay humid even in low humidity environments.

Low humidity will directly affect the plant’s ability to grow and eventually halt the growth.

Tips for Maintaining Ideal Humidity

  • Regularly mist the leaves and let the leaves dry on their own. However, keep in mind that the effects of misting are temporary.
  • However, make sure not to wet the leaves too much as it may invite different infections.
  • Keep a pebble tray below or near the plant to maintain humidity.
  • You can increase the natural precipitation by grouping your plant with other plants.
  • Use a room humidifier to keep the humidity level in check.
Misting plant leaves
Misting plant leaves (Source: Pexels)

Note: Make sure to check all the plants thoroughly before grouping them together. An infected plant may infect other plants in the area too.

5. Proper Soil Mix

Proper growth for a plant is determined by the quality of soil you use.

Hoya nummularioides prefer well-draining, lightweight, chunky and rich soil that doesn’t retain water for too long.

You may avoid root rot by using a soil mix that drains excess water effectively. These plants don’t enjoy standing in water for too long.

They prefer slightly acidic soil with a pH ranging from 6.1 to 7.5.

Using airy soil is perfect for epiphytes like Hoya nummularioides as they attach themselves to trees to grow in their natural environment.

You can make your potting mix for this plant by using:

Alternatively, you can also use peat moss or cactus soil.

sphagnum-peat-moss
Sphagnum Peat Moss (Source: Amazon)

Here are some recommended potting mixes for Hoya nummularioides;

Confused? Read “How to Choose the Suitable Hoya Plant Soil?

6. Fertilizer Requirements

Plants cannot always get all the required nutrients from the soil. So, it is best to fertilize your plant to provide nutrients or minerals from the outside.

You should feed your plant with fertilizer rich in essential minerals, nitrogen, potassium, and phosphorous.

Nitrogen gives new life to the foliage, and phosphorous is helpful when the plant is flowering.

Feed Hoya nummularioides balanced liquid fertilizer once a month during spring and summer when the plant grows in full fledge. Do not fertilize in winter.

Alternatively, you can use general-purpose fertilizer too. Liquid or water-soluble fertilizers are easy to use as they can be diluted to the required capacity and applied directly to the soil.

Do not overfeed your plant as it may lead to yellowing, browning, and stunted plant growth. Similarly, under fertilized plants have pale foliage and weak stem.

Here are some commercial fertilizers for your plant:

Miracle Gro Liquid Plant Food
Miracle-Gro Liquid Plant Food (Source: Amazon)

Tips for Proper Fertilization

  • Water your plant thoroughly before fertilizing. Moisture helps the nutrients to spread quickly.
  • Adjust the fertilizer content accordingly if you see a nitrogen, phosphorous, or potassium deficiency.
  • Make sure to dilute the fertilizer to the required strength.

7. Dormancy Period

Like most other household plants, Hoya nummularioides tend to go dormant with the decreasing temperatures in the winter season.

Going dormant doesn’t imply the plant will stop growing totally; instead, it will slow down and save energy for when it emerges from the dormancy.

During their dormancy period, plants don’t need nourishment like water and fertilizer compared to their growing months.

Watering it once a month during its dormant period is enough for the plant to grow.

Similarly, it would be best to cut back on fertilizing since these plants are not heavy feeders. Also, fertilizing in winter can lead to chemical burning in plants.

The plant won’t exhibit any severe signs during its dormancy period. But it would help if you protected it from cold drafts and breezes.

If the plant goes through a good dormancy, it will flower better during its growing period.

8. Growth Habits

Hoya nummularioides grow pretty quickly and are consistent every year about their blooming.

The growth rate of this plant is normal. They grow a few branches in a few months. Whereas, during winter, the growth of this plant is slowed.

Hoya nummularioides can grow up to 3 meters (10 feet) tall within 2-4 years if provided with proper growing conditions.

You do not need to worry your head about pruning or repotting soon as it occupies the place it is in and sometimes wraps around objects.

You can also hang these plants in baskets to add to your decoration. Use a basket will a well-draining soil mixture to achieve the best results.

Flowering Habits and Foliage

Hoya nummularioides produce one of the most beautiful flowers among the Hoya species.

This plant consists of small leaves and small flowers, but the vines can grow very long and spread out from the sides if you hang them.

The leaves of Hoya nummularioides are waxy, and the flowers produce an attractive and pleasant smell.

Flowers of Hoya Nummularioides
Flowers of Hoya Nummularioides (source: Etsy)

The flowers this plant produces are so small that their entire umbel, which has nearly 20 flowers, would still be smaller than your thumb.

Different Hoya nummularioides varities can produce different colored flowers.

Depending on the climate and conditions, Hoya nummularioides bloom once or twice a year. The flowers are shaped like stars, while the petals are white and the corona is reddish-pink.

My Hoya nummularioides usually bloom in spring or fall and hand me the privilege to sight the flower more than once a year.

And trust me, its fragrance is so good; it will blow your mind.

Keep these in Mind to See your Flowers Bloom

  • Provide it with enough bright indirect light.
  • Maintain the humidity and temperature levels around the plant.
  • Do not prune off the spurs even after the blooming period ends.

10. Potting and Repotting Hoya Nummularioides

Hoya nummularioides is an epiphytic plant that loves to have other plants in its periphery.

Due to its miniature and small root system, this plant will not need big pots. Also, they love to stay cozy in their pot. So you can drop the idea of repotting for a while.

Until you see the roots popping out of the drainage holes and interthread with each other.

Generally, Hoya nummularioides should be repotted every 2 to 5 years, depending on the conditions and growth rate.

These Hoyas like cozy spaces, but you should keep in mind not to cause them stress by overly packing them in a pot for a prolonged period.

If your plant is stressed, its growth will gradually slow down, and the soil will start to dry up quickly.

For the first potting, you can choose a pot that is at least 3 inches in diameter and perfect for the plant’s rootball to fit.

After that, remember to repot the plant in a container at least 2 inches bigger than the current pot.

Use terracotta pots for repotting as those pots help maintain the soil moisture and prevent overwatering. You can also switch to baskets if you want those vines to spread out.

Terracotta pots (Source: Amazon)

Here are some amazing baskets and pots for your plant;

Tips for Repotting Hoya Nummularioides

  • Use safety measures like gardening gloves and, pruning shears, knives. Make sure they are properly sterilized.
  • Be extra careful and gentle while pulling out the plant to avoid breakage.
  • Prepare a potting mix for the plant by using the items mentioned above.
  • Take a pot for repotting and ensure that the pot has suitable and proper drainage holes.
  • Fill 70% of the pot with the prepared well-draining potting mix.
  • Place the plant in the pot and gently dap the soil around it with your hands. Leave some space for future fertilization.
  • Water the plant and place it in an area with adequate light.

11. Pruning Hoya Nummularioides

Hoya nummularioides do not need frequent pruning if they are potted. However, that changes if they are hanged.

While hanging the plant, sometimes the vines tend to get entangled with each other, which would mess up their perfect appearance.

You can do light pruning of this plant a couple of times a year to maintain its charming looks.

The best time to prune Hoya nummularioides is at the beginning of spring and summer, when the plant can quickly recover from any shock during pruning.

Clean tools for pruning (Source: Pexels)

While pruning, ensure that you are not cutting the spurs (the part where the flower grows) because the flowers grow on the same spurs every blooming season.

Pruning in this plant is done to avoid the messy look and keep the vines in check.

Tips for Pruning Hoya Nummularioides

  • Wear proper masks, gloves, and goggles.
  • Remove only the leggy stems, dead leaves, and yellow foliage.
  • Make sure you are using only sterilized equipment to reduce the chance of any potential infections.
  • Properly wash your hands after the pruning session.
  • Dispose of the pruned parts to avoid making a mess around the plant.

12. Toxicity of Hoya Nummularioides

*sigh* Unlike most beautiful, deadly, and toxic plants, Hoya nummularioides is free from any toxicity.

The ASPCA (American Society for the Prevention of Cruelty to Animals) has not listed this plant in toxic plants for animals.

However, as the vines of this plant are long, you and your babies still have the risk of tripping over the vines.

Watch your step!

Hoya nummulariodes
Hoya nummularioides (Source: Etsy)

Method to Propagate Hoya Nummularioides

Well, it’s hard not to love Hoya nummularioides. Any plant enthusiast would want more than one of these gems in their collection.

Trust me, ordering a new plant and waiting for it to arrive is more tedious than it sounds.

Propagating Hoya nummularioides is very easy and cheap. You just have to be patient, as the plant can take a few months to grow.

You can propagate this plant by method of stem cutting. This is the easiest and best propagation method.

Cutting Stem for propagation
Cutting Stem for propagation (Source: Pexels)

You can propagate Hoya nummularioides during spring and summer when the plant is raring to grow.

Quick Check Before Propagation

Jot down the following as a to-do list and tick them off before the propagation.

Materials RequiredPurpose
Gardening KnifeFor stem cutting
Gardening GlovesFor safety
Hoya Potting MixPotting Medium
PerliteFor extra drainage
Rooting Hormone (Amazon's choice)For best growth
Terracotta Pot with a Drainage HoleBest for Hoya nummularioides
HumidifierTo maintain the humidity
Liquid Plant Food for HoyaFertilizer for Hoya nummulariodes

Make sure your plant is free from any kind of infection before propagation. You wouldn’t want your propagated stem to carry diseases.

Steps to Propagate Hoya Nummularioides

You need to follow these steps to propagate Hoya nummularioides.

  • The first step is to disinfect your cutting tools by applying rubbing alcohol with a cotton pad.
  • Wear protective gear like gloves and goggles.
  • Choose a healthy stem and cut 3-6 inches of it. Make sure to leave a few leaves and nodes in the stem.
  • Take a transparent water jar and fill the jar with water. Place the cutting inside the water.
  • Submerge the nodes in water but leave the leaves out. Otherwise, the plant may die before rooting.
  • Place the jar near the windows or places with enough bright but indirect light.
  • Make sure to change the water every week.
  • The node will start to root in about 3 to 5 weeks. Once the root is 1-2 inches long, take the stem out and plant it in the soil.

If you want, you can transfer the stem directly to the potting mix. Make sure the mix you use has a provision for proper drainage.

You can cover the pot with plastic bag to maintain the humidity. But remove the cover every once in a while to avoid trapping too much moisture.

Common Problems in Hoya Nummulariodes

1. Common Pests

Most of the hoyas are rarely affected by these pests. But that does not mean that they have some kind of superpower to repel bugs. They are still prone to pests.

Due to its succulent-like foliage and juicy leaves, some pests are attracted to Hoya nummularioides.

The most common bugs to attack this plant are Mealybugs and Aphids.

Mealy bugs
Mealybugs infestation (Source: Wikimedia)

You should occasionally check the plants for the following signs and symptoms of pests infestation.

PestsSigns and SymptomsEffect on Plant
MealybugsWhite cottony powder like sightings on leaves and stem.Plant starts to lose nutrients and the leaves lose color.
AphidsYou can see honeydew on the flowersFlower blooming is affected.
Leaves turn yellow and stem is swollen.

Solutions

  • Apply some rubbing alcohol on cotton and dab the part where you can see mealybugs infestation until you get rid of mealybugs.
  • Spray the plant with high water pressure to eliminate bugs that are too stubborn to let go of the plant.
  • Use neem oil, a horticultural oil, to naturally get rid of the pests.
  • Mix soap with water and spray it on the plants.
  • If you can, pick some of the pests with your hands. But make sure to use proper gloves.

Preventive Measures

  • Check your plant for infestations and symptoms of pests regularly.
  • Do not group your plant with other affected plants.
  • Pests like wet conditions. So, avoid overwatering your plant.

2. Common Diseases

Hoya nummularioides is a vigorous plant and does not succumb to diseases easily.

The most common disease this plant suffers from is root rot.

Root rot is one of the most common problems that lead plants to an untimely demise. It is mainly caused by overwatering and waterlogged soil.

root rot in sugarbeet
Root Rot in Plants (source: Wikimedia)

It would be better if we could detect the root rot before it starts to cause serious threats, but it would be impossible as the roots are under the soil.

Slowly, you’ll start to see the symptoms of root rot in your plants. By this point, the roots will have sustained some damage.

Other symptoms include:

  • Stems become mushy
  • Flowers don’t bloom even in the blooming season.
  • The plant loses color, and the leaves become yellowish.

Solutions

  • First of all, drain any excess water pooled at the bottom of the plant in the saucer.
  • Remove the plant from the pot and prune all the damaged roots right above the brown part.
  • Prepare a new potting mix and make sure the draining is good. Use orchid bark to soak up excess water.
  • Plant your Hoya there and take good care of it.

Preventive Measures

  • Water the plant by sticking to a watering schedule.
  • Do not mist the plant at night. The moisture takes too long to evaporate.
  • Keep your plant away from other infected plants.
  • Apply fungicides on your plant occasionally.

Also, watch this full video to get the full information,

Conclusion

Hoya nummularioides is a beautiful plant to have in your home. Their flowers can add a charm to the decoration department.

Caring for Hoya nummularioides is not that hard. You just need to follow the above tips properly, and voila! You got yourself a healthy and cute Hoya.

Good luck!

Want to know about other species of Hoya? Read our articles about other Hoya varieties.

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