Hoya Fungii – Ultimate Plant Care Guide

hoya fungii

The Hoya fungii is a beautiful vining houseplant with beautiful green leaves. It is often grown in containers or hanging baskets to allow its vines to show off its beauty.

In addition to its oval shaped leaves, the plant also produces gorgeous blooms that are white in color with a red center.

As with other hoyas, these flowers are very small but grow in bunches forming a small semi-spherical shape.

This makes it unique looking compared to other flowering houseplants.

The plant itself is native to China. And thus, it enjoys moderate but humid conditions.

In general, it is an easy to care for plant with one or two aspects that are a bit trickier. Thus, it pays off the take the time to get to know the Hoya fungii.

Hoya Fungii Plant Care

Light Requirements

The Hoya fungii thrives in bright, indirect sunlight. It also does well in medium light or partial shade. And, can tolerate a bit of low light

This makes it an easy houseplant to take care of indoors.

But, while it does enjoy plenty of light, it is not able to withstand periods of direct sunlight. Nor can it take very harsh or intense sun like that in the mid-afternoons or during the peak of summer.

This will scorch the plant’s leaves causing them to lose their beautiful green color.

This means an eastern exposure the best spot for it in the home followed by a northeast location. A west facing window is likewise a good spot as long as you keep it away from the sun’s direct rays. You can do this by keeping it at least 3 feet from the window or placing sheer curtains to filter the light.

A tree outside the window that only allows dappled light to get through likewise works.

You do want to be wary of a southern exposure because of the long hours of sun and the strong afternoon sun.

 

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Temperature

Your Hoya fungii is native to China, which is located in East Asia. Part of this region has tropical wet climate. As such, it has hot weather, a good amount of rainfall and very humid.

But, a larger portion experiences more moderate conditions. As such, it does not get as hot as Southeast Asian countries like Thailand, the Philippine so even Taiwan.

This makes the Hoya fungii’s ideal climate range between 50 and 78 degrees Fahrenheit, which is a bit lower than other hoyas.

It is also more sensitive to temperatures below 50 degrees and above 80 degrees both of which make it begin to stress. And, the further off you get from its sweet spot, the more potential there is for damaging the plant or affecting its foliage.

Another thing to consider is that hoya need cooler conditions to produce flowers. So the lower end of the range is a good area to shoot for.

However, it is not cold hardy. And, won’t be able to get through freezing temperatures of winters like that in most parts of the country.

Instead, if prefers USDA Hardiness Zones 9 to 10 where it can enjoy sunshine outdoors all year long.

 

Humidity

As mentioned, the Hoya Hoya fungii is used to humid conditions. As such, it prefers levels of around 50% indoors. Although, it won’t be fussy as long as indoor humidity stays between 40% and 60%.

Unfortunately, that level is a bit high most homes.

Thus, you’ll want to check what your household humidity is (you can use a digital hygrometer). And, adjust as needed.

In some cases, you may not need to do anything. But, if you find that your home’s humidity consistently stays in the 30s or lower, you’ll need to increase humidity to keep the plant happy.

Here are a few options.

  • Use a humidifier
  • Mist the plant about 2 or 3 times a week
  • Place the plant on top of small stones in a water tray
  • Group it with other plants
  • Move it to a more humid room like the bathroom or kitchen

Before moving onto the next section, it is worth mentioning that high humidity also means more moisture in the air. As such, it increases the risk of mold and fungal issues with your plants.

As such, having good air circulation and enough sunlight as essential to help dry up any excess moisture that may end up in the soil or leaves.

You can do this by keeping a few windows open or having a fan ventilate certain rooms. But, be careful of where these are situated.

The plant does not like drafts be it cold or warm. As such, keep it a good distance from fans, air conditioners, heaters and open windows or doors.

 

How Often to Water Hoya Fungii

Your Hoya fungii is an epiphytic plant with succulent-like leaves. This means:

  • It has a small root system which it does not fully rely on to get nutrients and water. Instead, they are used to be in more open air.
  • Its fleshy store water which helps it get through dry spells.

Why are these important?

It tells you that the plant can easily be susceptible to overwatering. Thus, you want to be careful with too much water or watering too often.

Small roots means they can easily be overwhelmed by too much moisture. And, since the plant already stores water, adding more when it still has “reserves” can likewise overwhelm it.

However, the tricky part is that your Hoya fungii also enjoys moist soil especially during the warmer months. It needs this because it is actively growing at this time.

And it can only sustain that growth if you give it sufficient sunlight, water and fertilizer.

Therefore, your challenge is balancing things.

And, the best way to do so it allow the soil to dry a bit but not all the way through. A good level to shoot for is at least the top 1 to 2 inches of soil. But, avoid letting the soil dry way past halfway down the pot (50% dry).

This sweet spot keeps the plant happy with enough moisture but prevents you from watering too soon.

You can stick your finger into the soil up to the first or second knuckle and feel for the soil. Or, use a moisture meter to measure this.

Similarly, the plant prefers deep watering. That is keep pouring water onto the soil until is starts dripping from under the pot. Then stop.

Allow any excess liquid to completely drain before returning it to its spot indoors.

The first part allows moisture to reach the roots and hydrate the plant. The second part ensures the roots don’t end up sitting in a pool of water for long periods of time which can lead to root rot.

Both are very important so take the time to do this every time you water the plant.

 

Soil for Hoya Fungii

Since your Hoya fungii is susceptible to overwatering, it is crucial to choose the right soil.

Avoid soil that is too heavy or tends to retain moisture. While this works well for moisture-loving plants, it can be very harmful for your Hoya fungii over the long run.

Instead, you want a potting mix that is well-draining.

Ideally, it should be light and airy as well to allow oxygen to easily circulate through the particles so the roots can breathe.

An easy soil mix recipe that works well with the plant is using equal parts of:

  • Regular potting mix
  • Perlite
  • Orchid bark or coco coir

Perlite improves drainage and the orchid bark or coco coir also helps. Because the latter two are chunkier, they allow more air to circulate as well.

Other options you can use include sand, pumice and vermiculite. All of these help with drainage as well.

 

Fertilizer

Feed your Hoya fungii with a water soluble fertilizer diluted to half strength once a month during its growing season.

Avoid applying fertilizer when the soil is dry as this makes the concentration fairly high. Instead feed it when you water or after you’ve watered the soil.

Doing so helps avoid fertilizer burn due to oversaturation of the chemicals from the fertilizer. This can damage your roots and cause the plant’s leaves to change color as well (to yellow).

You don’t need to feed it during fall and winter. Also avoid doing so when the plant is blooming.

Since hoyas are known for their unique looking lovely flowers, you may also want to switch from a nitrogen rich blend (which promotes leaf development) to a bloom booster.

Bloom boosters have higher levels of phosphorus (the middle number in the N-P-K ratio on the fertilizer produce label). This will help increase flowering.

 

Pruning

Hoya fungii are vining climbers that can grow to more than 6 feet long. You’ll often see them in pots or hanging basket.

And, the latter is actually quite popular as it looks amazing when its stems and leaves are draping drom from above.

Meanwhile, you will need to provide some kind of structural support for the plant if you keep it in a container. A pole or trellis work very well.

That said, the plant is a fairly vigorous grower.

As such, you do need to prune it every so often as it can get a bit messy looking as the vines grow around one another.

However, it is up to you to decide when to do this since it depends on the look you’re going for.

As with other plants, do remove any damaged or discolored leaves as well.

 

Hoya Fungii Propagation

Stem cuttings is the most common way to propagate Hoya fungii. It is easy and quite straightforward so anyone can learn how to be successful with it at home.

You can propagate these stem cuttings in water or soil. Both work quite well so it is really up to you which one you prefer doing.

Here’s how to propagate Hoya fungii using stem cuttings.

  • Take a 4 to 6 inch healthy stem but cutting it right under a leaf node. Ideally, you want to choose a stem with at least 2 or 3 leaves.
  • Take off the bottom leaves to expose the nodes. These are where the roots will grow from.
  • Place the stem cutting into a jar of water with the cut side down. You can also go directly plant it into soil if you want to skip starting in water.
  • Change the water every few days to keep it from getting cloudy.
  • Leave the jar in a bright spot with non-direct light.
  • After 14 to 20 days you’ll see roots developing from the nodes. This is why using a glass or transparent jar is helpful. It lets you monitor the day to day growth of the cuttings.
  • Once the roots get to between half an inch or an inch long, you can move it to a small pot with soil.

 

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How to Repot Hoya Fungii

Your Hoya fungii enjoys being pot bound. This along with is small root system means it takes years before you need to repot it. In general, this can take between 3 to 5 years depending on how fast your plant actually grows (which in turn depends on its living environment).

 

Toxicity

Like other hoyas, the fungii is non-toxic to people or animals. This makes it safe to keep around the home even within reach of young children and pets.

 

Pests and Diseases

One of the things you want to watch our for with your Hoya fungii are pests and diseases. It is prone to these problems so you need to regular inspect it and be vigilant of any changes in the plant.

The most common pests to attack your Hoya fungii are spider mites and thrips. These are problematic because they suck on the sap of your plant. As a result, it robs it of nutrients and moisture.

The more pests come or as it grows into an infestation, the more likely they’ll be able to overwhelm the plant.

Similarly, the plant’s love of humid conditions makes it prone to excess moisture, which in turn increases the risk of mold, fungus and root rot. All of which post a danger to its leaves, roots and eventually its overall health.

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