Hoya Krimson Queen: Ultimate Care Guide, Tips and FAQs

I don’t think there is any other plant that sounds royal as Hoya Krimson Queen.

But contrary to its name, it is ideally a low-maintenance plant that does not need constant care as royalty does.

Still, you would want to remember a few things if you want your Queen to look beautiful.

Hoya Krimson Queen requires a well-draining, moist soil mixed with organic matter and placed in a bright indirect light source. It thrives in high temperature, high humidity, and regularly fertilizing will help your plant grow rapidly.   

Common NameHoya Krimson Queen
Botanical Name Hoya Carnosa var.
FamilyApocynaceae
TypePerennial Epiphytic Plant
OriginNative to Asia and Australia
Distinguishing FeaturesCreamy and Pink Foliage
Height15 to 20 inches
Spread36 to 40 inches
FlowerStar shaped waxy flower
Growth ZoneUSDA 9-10 zones hardy

Also known as Hoya Carnosa ‘Tricolor,’ this plant is famous for its often bright pink and white colored leaves, which can instantly add a colorful spice to any room.

This plant is a perfect addition to an indoor garden and can also be grown in hanging baskets.

Due to its ability to thrive without much care, Hoya Krimson Queen has been a famous plant for enthusiasts since the days of our grandparents.

A little bit of extra knowledge and information will allow you to grow this plant inside your home without any fuss.

Hoya Krimson Queen (Source: Amazon)

Hoya Krimson Queen Care and Growing Guide

The basic care requirements like light, temperature, watering, etc., hold for any plant, and it’s the same for your Hoya Krimson Queen.

These few factors will determine whether your Hoya Krimson Queen lives up to its royal name or not.

1. Sunlight and Location

A brightly lit location with indirect light is the best place to keep your Hoya Krimson Queen.

Since it is mainly a heavy foliage plant, it needs enough sunlight to photosynthesize and make enough good.

Whatever you do, it is always important to remember that plants like these don’t fare well in direct sunlight.

If you leave this plant in direct sunlight for a long period, it will start to show signs of wilting brown leaves, yellowing, etc.

Hoya Krimson Queen Near a Window (Source: Pixabay)

You can provide it full direct sun in the morning and evening, but it’s best to avoid such in the afternoon.

6-8 hours of proper sunlight daily will help the plant foliage to retain its beautiful color.

The best place to keep it indoors is in an East-facing window where it gets ample sunlight.

If an East-facing window is unavailable,  you can put it two to five feet away from a  South-facing window.

You can also keep it outdoors in a secluded area where it gets partial shade. For example, you can put it on your patio or balcony, provided it has enough shade to cover from direct sunlight.

Using a sheer curtain can act as a shade while keeping it in a brightly lit place.

2. Ideal Temperature

Hoya Krimson Queen fares well at normal room temperature.

Although it grows well in high temperatures, keeping the temperature between 16°C – 25°C.

You can also grow it outdoors if you live in USDA zones 10-12.

If you live in any other place than USDA zones 10-12, it’s best to do it indoors where you can provide it with a suitable environment for growth.

Temperature swings also should be avoided as it is a sure-fire way of stressing your plant to the extreme.

Despite its resistance to high temperature, prolonged exposure to high temperature can weaken your Hoya.

It is also not cold hardy which means that you should avoid freezing temperatures at all costs.

In case of low temperature, you can mulch your plant to act as an insulation for it.

Frost blanket is also an inexpensive way to save your Hoya Krimson Queen from cold.

3. Ideal Humidity

Almost all tropical succulents prefer to have high humidity levels for growing.

It prevents the loss of water from its leaves which is important for maintaining lush foliage.

Likewise, Hoya Krimson Queen also needs a highly humid environment to thrive beautifully and retain enough water in its thick fleshy leaves.

A relative humidity level of 60-80% is best for growing your Hoya Krimson Queen.

Humidifier near a Plant (Source: Amazon)

However, it also thrives well in moderate humidity levels indoors. On the other hand, extremely arid regions can cause brown leaf tips and wilt due to the dry condition.

You can do the following things to maintain proper humidity levels.

  • A simple and inexpensive way to increase the humidity of the environment is to use a pebble tray.
  • You can also group plants closely to maintain humidity levels. However, this is only relevant if you are planting your Hoya indoors.
  • Misting your plant leaves regularly is also a good way to increase humidity. But it is only a temporary solution and should not be relied upon for the long term.
  • Although a bit expensive, buying a humidifier is the best way to ensure that your plant gets the humid environment it needs to thrive.

4. Watering Requirements

Proper watering is an important care aspect for your Hoya Krimson Queen, as overwatering can easily result in a barrage of water-related problems.

Hoyas are tropical succulent plants that can retain water in their thick fleshy leaves. Due to this, it is a fairly drought-resistant plant and can live without water for days.

However, it is important to maintain a consistent watering schedule to keep your Hoya thriving.

The ideal watering schedule is one to three times a week during the growing season: summer and spring.

In winter, you can water it once for two weeks, depending on how dry the soil is.

As a general rule of thumb, it is best to water your Hoya Krimson Queen only when its soil completely dries off.

Underwatering is preferable to overwatering your Hoya as it is very susceptible to root rot.

5. Proper Soil Mix

The kind of soil you use and the amount of watering correlate to each other.

Soil that is clay type and heavy retains a lot of water, whereas soil that is more sandy and light allows for proper drainage.

Hoya Krimson Queen prefers a well-draining and porous soil mix that is light and fluffy. A soil pH of 6-6.5 is generally considered ideal for Hoyas.

Well-draining soil mixed with Organic Material (Source: Pexels)

Soil mix that retains moisture and allows for proper aeration and drainage is the one to go for.

Since this plant is prone to root rot, you would ideally want to use a potting mix that doesn’t easily make the soil soggy.

You can use the following soil mix recipe for your Hoya Krimson Queen

  • One part succulent plant soil mix
  • One part perlite or vermiculite
  • A handful of coconut husk or orchid barks
  • One part peat moss

This mix will allow the soil to retain enough moisture and create a well-aerated structure.

If you want to buy a ready-made potting mix for your Hoya Krimson Queen, Miracle-Gro Cactus, Palm & Citrus Potting Mix is the best available option.

For an in-depth guide on how to choose the soil for your Hoya: How to Choose the Suitable Hoya Plant Soil?

6. Growth Habits

Hoya Krimson Queen is a perennial, epiphytic plant with long, beautiful stems covered in thick, lush leaves.

It is a trailing vine which means that it is best suited to keep in hanging baskets. However, you can also train it to climb as it will grab into anything it finds.

If the environment is ideal for growth, it can grow up to 2-3 m. In its native place, it can grow up to 6 m in height and spread.

It has thick, fleshy leaves which are 4-5 cm long and has a waxy texture. Hoyas are also known as wax plants for this reason.

If all its basic care requirements are fulfilled, then your Hoya Krimson Queen will grow rapidly.

7. Fertilizing Requirements

It doesn’t require as much fertilizer to thrive, although it is important to maintain a consistent fertilizing schedule.

Overfeeding is important to avoid as it can cause root tip burns, curling, and drooping of leaves.

A balanced fertilizer can do the trick, but the ideal fertilizer to use is less in Potassium( the K of NPK). Therefore, a fertilizer with the NPK ratio of 2:2:1 shall be the best one to use.

Fertilizing is ideally done once a month in the summer and spring seasons. However, you can cut down the fertilizing rate to half in winter and do it once every 2-3 months.

Your plant won’t require many nutrients to grow in the winter as it is in a state of dormancy.

A general water-soluble balanced fertilizer like Jack’s Classic All Purpose 20-20-20 Water Soluble Plant Food is good enough.

Jack’s All Purpose Water Soluble Plant Food (Source: Amazon)

Alternatively, using organic counterparts to synthetic fertilizers is also something you can do for your Hoya.

Vermicompost, worm castings, manure, blood meal, etc., are other alternatives to chemical fertilizers that you can use.

Regularly treating your plant with worm castings or compost can eliminate the need for using chemical fertilizers for your Hoya Krimson Queen.

8. Choosing the Right Pot

Choosing the right pot is a very niche aspect that is often overlooked.

Using a good-sized pot made of the right material can help retain the moisture and eliminate the need for frequent repotting.

The most important thing to look out for choosing a pot is its material. There are generally two types of pot material, either plastic or clay.

For succulents like Hoya Krimson Queen, it is best to use a clay or terracotta pot to retain moisture, and the pores in the pot also allow for exchanging Oxygen.

Another thing to look out for is drainage holes. You should not use a pot without drainage holes as it can easily cause problems like root rot if you overwater, even just a bit.

You can use a 4-5 inches pot if you grow your Hoya for the first time.

Terracotta Pots (Source: Amazon)

9. Repotting Schedule

Hoya Krimson Queen should be repotted every two to three seasons.

Some people tend to repot this plant every year or so, but this practice should bed avoided.

Hoya Krimson Queen generally prefers to stay root-bound and doesn’t need much pot space for growing.

Some things to consider while repotting are:

  • Avoid repotting when the flower is blooming.
  • Early spring and early summer can be the best time for repotting.
  • Use a pot only one size bigger than the previous pot while repotting.
  • Change the soil mix every time you repot.
  • The root should not be damaged while repotting.
  • Repotting should never be done in winter as it stresses out the plant.
  • Add some fertilizer to the soil after repotting.
  • Watering should be done consistently after repotting.
Repotting Plants
Repotting the plants (source: Unsplash.com)

Repotting your Hoya Krimson Queen is pretty straightforward too. Follow the steps below to repot your Hoya plant:

  • First, take the plant out of the old pot and place it somewhere straight.
  • You can make the pot upside down and tap gently on the base to get the plant out of the pot.
  • Next, choose the right-sized pot where you plan to grow it.
  • Fill about one-third of the pot with potting mix soil.
  • Place the plant gently in the pot.
  • Cover the plant with soil till it reaches just an inch below the brim of the pot.
  • Press the soil firmly with the palm of your hands.
  • Your plant is now ready to grow in the new pot.

10. Incidence of Pests

Pests are pesky little creatures that easily undo the years of hard work and patience you might have put into growing your plant.

Hoyas are notorious for attracting pests. If you don’t give it enough attention, it won’t take long for your plant to fall prey to pests.

The most common pests that attack Hoya Krmson Queen are mealybugs, spider mites, and scale.

Mealybugs

Mealybugs are small, white bugs that are cotton-like and which often look like specks of dust.

These pests penetrate the leaves of the plants and suck their sap that can cause the plant foliage to be damaged.

It likes to hide in the cracks and crevasses of plants which makes it hard to locate.

It loves succulents like Hoya Krimson Queen, and it can easily cause severe damage to the plant if left unchecked.

Symptoms
  • Black or red spots in plant leaves
  • Stunted growth of the plant
  • Wilting and leaf curling
Treatment
  • Dip cotton balls in rubbing alcohol and dab the bugs
  • Treat the infected leaves with Neem oil or insecticidal soaps

Spider Mites

Spider mites are rounded-shaped mites that are black or red. It is hard to see this small little creature with our naked eyes.

It prefers to live on the underside of the leaves and feed on the sap of your Hoya.

Plants infected with spider mites have spider webs everywhere. It can help to confirm whether your plant is infected with Spider mites or not.

At late stages of heavy infestation, leaves start falling off, and the plant eventually dies.

Symptoms
  • Web-like structure in plant parts
  • Yellowing and browning of leaves
  • White and yellow spots
Treatment
  • A blast of water on the leaves can knock off these pests
  • You can use a blunt knife to scrape them off the leaves
  • Washing the leaves with Neem oil and Insecticidal soap

Scales

Scales are armored insects that thrive in a warm environment.

It is small, oval, and flat, with a shell on top of its body.

They attach themselves to the stems and leaves of the plant and feed by sucking the sap.

A few species can even kill the host plant after it has sucked enough of its nutrients.

Due to its tough exterior, it can be hard to counter this pest with regular pesticides or insecticidal soap.

Symptoms
  • A sickly look of plants
  • Withering and dropping of leaves
  • Black sticky fungus on the plant parts
  • Heavy infestation means a reduced growth rate
Treatment
  • Pruning of infected leaves and stems
  • Picking off them by hand
  • Brushing off with a toothbrush
  • Neem oil can help to some extent if the infestation is low

11. Fungal Disease Infection

Although Hoya Krimson Queen attracts pests easily, it is generally hardy when it comes to diseases.

However, if not properly cared for, it can be infected with fungal diseases.

High humidity, overwatering, and overfeeding can easily result in fungal disease.

Root rot and Botrytis blight are some of the most common diseases that can affect your Hoya Krimson Queen.

Wilting, black and brown stem lesions, gray-colored spots, leaf curling and drooping, etc., are some of the symptoms to look out for.

DiseaseAgent of CauseSymptoms
Botrytis BlightBotrytis cineraSpotting, Discoloration and Wilting
Phytopthora BlightPhytophthora capsiciBrown leaf spots, Wilting of leaves, Stunted growth
Powdery MildewPodosphaera xanthiiLight Grey Spots, Powdery Spots

Treatment

  • Wipe the infected area with rubbing alcohol.
  • Discard the plant if the disease has spread extensively.
  • In case the disease is just starting to spread, prune the infected parts.
  •  You can use copper or sulfur fungicides to prevent the disease from spreading.

Prevention

  • It would help if you avoid high humidity and overwater.
  • Don’t allow the leaves to be soaked in water.
  • Place the plant in a well-ventilated space.
  • White repotting in an old pot, be sure to wash it properly.

Hoya plant problems can be very frustrating, especially if you don’t know what to do. Read this article on how to handle your hoyas and their issues!

12. Flowering of Hoya Krimson Queen

Although most people grow Hoya Krimson Queen for its attractive foliage, it also blooms beautiful flowers, making this plant more desirable.

It has a unique star-shaped blossom that flowers in waxy clusters.

The flower has a great smell and is mostly light pink to whitish. The scent is comparable to that of fresh chocolate.

Unlike other plants, Hoya Krimson Queen starts flowering only after three to four years. 

If you provide the right conditions, then it will consistently flower every spring and summer season.

Some people use expensive blossom-boosting fertilizer for their plants. But it is not needed for your Hoya Krimson Queen.

The flower clusters start to develop from what is called a peduncle. After that, it is the woody, thick clump at the growth end.

Remember not to damage the peduncle in any way since it is the end from which the flowers develop.

13. Pruning your Hoya Krimson Queen

As Hoya Krimson Queen grows vigorously when provided with proper care, you will need to learn how to prune to maintain a tidy look.

Pruning your Hoya Krimson Queen is the same as most other Hoyas.

However, your Hoya Krimson Queen does not require as frequent pruning as other var. of Hoya.

It’s also best that you consider doing light pruning as hard pruning is not necessary at all.

The best time to prune your Hoya Krimson Queen is after its spring growth, when the plant is growing actively.

Overgrown Hoya Krimson Queen (Source: Amazon)

The main objective of pruning your Hoya should be to control its growth and make it look fuller and bushy.

Follow the steps below to prune your Hoya Krimson Queen.

  • Get a pair of pruning shears or scissors and decontaminate it properly by rubbing with alcohol on both sides.
  • Don’t pinch or deadhead the spent flower stems. Those are called spurs and are the place from which new growth arises.
  • Look for vines that don’t have any spurs or that are overgrowing.
  • Select a node where you want to cut.
  • Cut back your vine an inch below your desired length.
  • Always be sure not to prune more than one-third of the plant’s foliage as it can hinder new growth.
  • Only light pruning should be done once in a while to encourage new growth.

14. Propagating your Hoya Krimson Queen

Propagation is an ideal way to save your plant if it is dying or to multiply them.

There are several ways to propagate a plant. The most common ones are steam cutting, leaf-cutting, air layering, and seeding.

While all of these are good enough ways to propagate your Hoya Krimson Queen, stem-cutting is the most effective and easy way to propagate.

Not only is it easy and effective, but it also encourages rapid growth and can be done in both soil or water.

Propagation is ideally done during the spring and the summer season when the plant is at its active growth phase.

Follow the steps below for successfully propagating your Hoya Krimson Queen.

Getting the Tools Ready

A pair of pruning shears, scissors, or a sharp knife is essential for cutting down your Hoya.

It would be best to sterilize the tool you are using by rubbing it with alcohol on both sides.

Alternatively, you can heat it over a naked flame or boil it for a few minutes to kill the unwanted bacteria and fungus.

Choosing where to Make the Cut

Ideally, the stem you want to cut for propagation should consist of a node and at least a few leaves.

Carefully cut a couple of inches below the node. Always aim for a quick and clean cut.

It would be best to do the cutting at a 45-degree angle to cover the most surface area. In addition, it will encourage rapid new growth.

Avoid a sawing motion while cutting as it can damage the stem.

Setting up the Growth Medium

You can either propagate your stem cutting in water or potting soil.

Propagating in water is the easiest method and has fewer chances of contamination.

If you are planning to propagate it in water, follow the steps below:

  • First, place the cut stem in a clear vase filled two-thirds in clear water.
  • Don’t let the stem touch the base of the vase.
  • The water should also be enough to cover the stem node.
  • You can also use a rooting hormone in the water to encourage rapid growth.
  • Place it where it can receive bright indirect sunlight.
  • Change the water every few days.
  • Wait till the root grows about 3-4 inches.
  • Then, transfer it into a pot that is a few inches bigger than the root system.

Propagating in the soil is also a fairly easy method and quite similar to water propagation.

The catch is that you won’t have to go through the hassle of transferring your plant into the pot.

For propagation in soil, follow the steps below:

  • Prepare the right potting mix and fill two-thirds of the pot with this mix.
  • Place the stem cutting into the potting mix.
  • Let the potting soil cover the node of the plant.
  • Keep the plant in a moist place where it can receive enough sunlight.
  • Allow the root system to grow a few inches long.
  • You can start watering at this stage and slowly get on with other necessary care requirements.

Here’s our complete guide for hoya propagation if you are looking to do it right.

Check out this video on how to propagate Hoya Krimson Queen

15. Hoya Krimson Queen Toxicity

According to California Poison Control, all species of Hoya plants are non-toxic to animals and humans.

Although it is not poisonous, it is best to keep it out of the way of children and animals.

Some people may be allergic to the milky sap it produces. So, always remember to wash your hands immediately after handling the plant.

In case of choking hazard, seek medical attention immediately. 

Hoya Krimson Queen Care Tips

By now, you have learned all the essential care requirements for your Hoya Krimson Queen.

These care tips will further help your Hoya Krimson Queen to thrive majestically.

  • Always remember to choose a clay pot with enough drainage holes while planting.
  • Water only when the soil becomes completely dry.
  • Always use a porous and well-draining potting mix.
  • Generally, high humidity is better than low humidity.
  • Avoid placing it in a cold and drafty place.
  • Repotting should be done every 2-3 years.
  • Do not use a bigger size pot than needed.
  • Always watch out for pests and diseases.
  • When using synthetic fertilizers, always remember to use half the recommended dose.
  • Always remember to provide bright but filtered light.

Hoya Krimson Queen FAQ

Why are my Hoya Krimson Queen Leaves, Turning Brown?

Too much water can easily result in the browning of your Hoya Krimson Queen leaves. Another particular reason is exposure to direct sunlight. Therefore, always use filtered light only and check your watering schedule if it needs adjusting.

Why is my Hoya Krimson Queen Leaves Fading?

Lack of enough sunlight can cause your Hoya Krimson Queen leaves to start losing their pink, white, or green colors. In some cases, temperature fluctuation can also result in discoloration. Therefore, always remember to provide at least 6-7 hours of full sunlight a day.

Why are my Hoya Krimson Queen Leaves Yellowing?

Yellowing leaves are mostly caused due to improper watering techniques. If your plant leaves are starting to turn yellow, you should first check its soil and roots. If the soil is soggy, then allow it to become completely dry before watering again and do the same.

What is the Difference Between Hoya Krimson Queen and Hoya Krimson Princess?

While Hoya Krimson Queen has pink or cream coloring on the edges of the leaves, Hoya Krimson Princess is variegated in the center.

Does Hoya Love to Misted?

Misting is a great way to increase the humidity of any plant, but for Hoya Krimson Queen, it will only do more bad than good. Misting is a high-risk, low reward scenario. Exposure of water to leaves for an extended time easily results in fungal diseases.

Wrapping up

Hoya Krimson Queen is a beautiful plant that is also low-maintenance and fairly easy to grow for beginners.

Growing this plant can be a rewarding experience, and you will love to see its rapid growth when provided with proper care.

It will reward you with a beautiful bunch of flowers and pretty foliage that will instantly add color to your home.

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