Curtisii Hoya: A Complete Guide

Written by Jennifer Hollohan
Updated: March 11, 2023
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There are numerous beautiful tropical plants available from nearly every local nursery. But people often get intimidated by the thought of caring for an unfamiliar tropical plant. Then they head home without that stunning variety they were eyeing. If you are one of those individuals, don’t worry. Some species are easy to care for — even for those new to houseplants. One of those is the hoya genus of plants. These gorgeous plants belong to the Apocynaceae (dogbane) family, and there are over 500 species! But we aren’t going to cover them all. In this article, we will explore the curtisii hoya.

Continue reading below to discover more about this unique plant!

Scientific NameHoya curtisii
Common Name(s)“Fung Wax Flower,” “Porcelain Flower,” “Wax Plant”
Plant FamilyApocynaceae
Native Region(s)Southeast Asia 
Life CyclePerennial
USDA Hardiness Zone10-11
Cultivar(s)none

Curtisii hoyas are gorgeous plants beloved by plant enthusiasts. Their leaves and vines actually fall into the succulent category, but that doesn’t mean they grow shorter than their relatives. Curtisii hoya vines can reach up to 2 feet long (or more).

In the article below, we look at what makes Hoya curtisii such a sought-after plant. We also cover details about caring for your hoya in case you bring a curtisii hoya home!

Hoya curtisii Leaves

Like all hoya plants, the leaves of Hoya curtisii are evergreen. The stunning, eye-catching, variegated dark green leaves have silver tones sprinkled throughout.

The tiny, spade-shaped leaves grow in thick, dense clusters along the creeping vines. They are slightly less than 1 inch (2.5 cm) long with pointed tips. And they grow densely on the vines.

Curtisii hoya in a hanging basket
Curtisii

hoya plants have spectacular variegated leaves.

©AreePho/Shutterstock.com

Hoya curtisii Flowers

When your Hoya curtisii blooms, you will get treated with clusters of tiny, creamy white flowers. They have a slightly fuzzy feel and a scent reminiscent of citrus. The flowers grow in clusters of 10-15 and are roughly 1/2 inch in diameter. They range between beige, white, or yellow-green. Additionally, they have red or pink centers.

Curtisii hoya flowers typically bloom in the warmer parts of summer. However, it is important to note that all hoyas take some time before the lovely blossoms appear. You may care for your plant for 2 or 3 years before they flower for the first time. So, keep at it. Patience is critical when tending to hoya plants. However, the effort will pay off in the end.

Fun Facts About Hoya curtisii

Hoya curtisii plants are relatively rare and highly sought-after. So keep your eye out at your local nursery or your favorite online dealer. And buy it quickly when you see one in stock because they tend to sell out quickly.

Caring for Curtisii Hoya 

Consider purchasing a hoya plant even if you are inexperienced in plant care. Due to their low maintenance requirements, they are extremely easy to care for. You also don’t have to worry about many diseases or pests when you own a curtisii hoya. The primary concern is root rot. And if you keep your hoya outside, you may have to contend with aphids. With good care, your plant will live for many years. It may even live for several decades! Let’s see how to take care of your Hoya curtisii plant. 

Temperature Requirements 

As a tropical plant, curtisii hoyas need the appropriate temperature and humidity levels. The ideal environment is 65-85 degrees Fahrenheit and at least 60% humidity. Most indoor environments will meet the temperature requirements easily. But you may need to find a specific location to keep your hoya so it receives the right amount of humidity. For example, consider placing your hoya in the laundry room or bathroom. Alternatively, you can keep a squirt bottle nearby to mist your plant regularly.

Don’t worry if your curtisii hoya gets a little too cold at some point. Most hoyas can tolerate brief temperatures as low as 50 degrees Fahrenheit. However, be aware that extended time in cold weather may stunt your plant’s growth. So don’t leave it outside for long when the weather is a little chilly.

Growing Requirements 

Hoya plants don’t have deep roots, so shallow pots or containers are the best option. Buy one that keeps the roots snug but doesn’t make them rootbound. However, excess soil can cause a soggy environment, which leads to root rot. So choosing the right container for your Hoya curtisii is crucial. 

Additionally, curtisii hoya should get planted in a pot with adequate draining. Choose a pot with drainage holes, so the water has a way to escape. 

Loose, nutrient-rich potting soil is sufficient. You can even pick one that is marketed specifically for cacti and succulents. Consider adding ceramic, perlite, or pumice to ensure your hoyas soil drains well. 

It is not necessary to fertilize your hoya when it is dormant during the winter. But you should fertilize your plant regularly in the warmer months to support its growth. A water-soluble slow-release fertilizer is an ideal solution. However, you can also consider adding a nitrogen-rich fertilizer early in the season to help encourage foliage growth. Then once the flowers start to bloom, switch to a phosphorus-rich fertilizer.

Light Requirements 

Hoya curtisii plants need indirect but intense light for at least six hours daily. Therefore, it is vital to avoid direct sunlight to prevent damage to the leaves. But the plant will suffer if you don’t give it enough good quality light. Less than six hours of sun daily will stunt the plant’s growth. However, your curtisii hoya will seek out light, becoming leggy and producing fewer leaves.

You can substitute artificial or grow lights when there is insufficient indirect sunlight in your home. But if you do, increase the time to 8 hours or more. They are not quite as powerful as sunlight, even indirectly.

Water Requirements 

Your Hoya curtisii does not need a ton of water. You will want to keep a closer eye on the soil in the summer. Water your hoya as soon as the top inch or two of soil dries out. Give it enough water to saturate the soil without making it soggy. But during the winter, you can let the soil completely dry out before watering. When it is time to water, stop when you see water seeping out through the drainage holes.

Propagation and Pruning 

Hoyas propagate easily, allowing you to fill your home or office with beautiful plants. You only need a stem cutting and a glass of water. A new root system will start developing when you stick the cutting into the water. 

Most people love the vines of hoya plants. But feel free to prune your plant back if it gets out of hand. However, you want to avoid pruning wherever the flowers grew in previous years. The lovely blossoms return to the same place annually, and you don’t want to risk losing flowers. 

The photo featured at the top of this post is © AreePho/Shutterstock.com


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About the Author

Jennifer Hollohan is a writer at A-Z Animals, where her primary focus is on gardening, mammals, and travel. Jennifer has over twenty years of writing experience. She holds a Master of Arts in Anthropology from the University of Colorado at Boulder, which she earned in 2005, and is a Herbalist. Jennifer lives in Colorado with her family. She loves hiking, admiring wildflowers, gardening, and making herbal tea.

FAQs (Frequently Asked Questions) 

Is Hoya curtisii string of hearts?

Although the two plants look very similar, they do not belong to the same genus. String of hearts is in the genus Ceropegia, while curtisii is in the genus Hoya. 

Which hoya has the biggest flowers?

Many hoyas are well-known for their tiny, delicate flowers. But not some hoya species have much larger flowers. The species with the largest flowers is Hoya lauterbachii. Its blooms reach roughly 3 inches across and grow in clusters of 7 to 8 flowers. 

Is Hoya curtisii easy to care for?

Like most hoyas, Hoya curtisii is very easy to care for. It only needs an appropriately warm and humid environment. You will also want to resist the urge to overwater to keep your Hoya curtisii happy.

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.