Carnosa Hoya

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  • Showy, Fragrant Flowers
  • Light Preference/Tolerated (Bright Indirect Light, Medium Light)
  • Average Watering Needs
  • Mature Height 10 Feet
  • Pet Safe

Carnosa Hoya is commonly known as Porcelain flower or wax flower/plant. You often hear this plant referred to by its Latin name over its common name. Hoya carnosa is known for its sweetly fragrant, star-shaped flowers of pink and white that hang upside down and get sticky with nectar. This hoya has curly vining stems with a trailing habit with glossy, dark-green foliage speckled with white. There are variegated varieties of Hoya carnosa as well. The compact version of this plant is known as the rope plant. There are several cultivars of Hoya carnosa that are readily available. Hoya carnosa is in the family asclepiadaceae or the milkweed family and originates from East Asia.

Best Locations For Growing Carnosa Hoya

Carnosa Hoyas are wonderful trailing houseplants that will look nice in many places in your home. Their cascading habit makes them gorgeous in hanging baskets or on top of a cabinet or shelf where their foliage can drape down gracefully. Hoyas are not toxic to pets or humans.

Carnosa Hoya Sunlight Requirements

Carnosa prefers bright indirect light as an indoor houseplant, but will tolerate a variety of light conditions. Carnosa will not flower in low light, as the plant requires bright light to flower. If placed outdoors, Carnosa Hoya should be protected from too much full sun as the leaves may burn; choose a location with part sun or shade. 

Carnosa Hoya Care

Carnosa Hoyas are fast growers but are a bit sensitive to care for. They should be kept at 65 degrees F, in 50% humidity, and benefit from a humidifier and/or misting of their foliage. Carnosa will only bloom if pot bound and if light is sufficient. The plants take 2-3 years to set buds and bloom, so be patient when growing this hoya. Once this plant begins to bloom, do not move the plant. It is very sensitive to light and moisture changes and can drop flower buds if adjusted; don’t move your hoya if it has budded. Flower buds might drop if the soil is too wet or dry. Repot when root bound, about every 2-3 years, and do not repot when blooming. If you want to keep the habit of your Carnosa Hoya small, prune vines in early spring. Be careful not to prune stems that have previously flowered because the next flower buds are set on those stems. Let their soil dry out completely between watering. 

Watering Carnosa Hoya

Carnosa Hoya likes a humid environment but its succulent-like leaves allow it to have lower watering needs. Hoyas do not like to be overwatered. Carnosa requires well-draining soil and a pot with a drainage hole. Let the soil of your Carnosa Hoya dry out between waterings. Insert your finger into the soil about an inch or so, if the soil is dry beneath the surface, your hoya requires water. 

Feeding Carnosa Hoya

Hoya benefits from a house plant fertilizer high in potassium once or twice a month. Carnosa Hoya does not go dormant in the winter but the growth does slow; fertilizer application should be reduced at this time to match the plant’s growth rate.

Carnosa Hoya Information

Light Exposure: Bright Indirect Light, Medium Light
Care Requirements: Easy
Watering Requirements: Average - When the top 2 inches of the soil dries out.
Pet Friendly: Yes
Kid Friendly: Yes
Air Purifier: Moderate
Habit: Trailing
Growth Rate: Slow
Mature Height: 10 feet
Mature Spread: 1-2 feet
Flowering: Yes
Flower Color(s): Orange, Pink, Red, White, Yellow
Flower Shade/Description: Yellow, Orange, Pink, Burgundy, White, Near Black
Fragrant: Yes
Foliage Type:
Foliage Color(s): Green
Foliage Description: Deep Green
Temperature: 64° - 75°F (18° - 24°C)
Humidity: 60% And Up
Common Name: Carnosa Hoya
Other Name(s): Porcelain Flower, Wax Plant, Honey Plant
Scientific Name: Hoya carnosa
Plant Type: House Plant

Container Sizes

Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.

4.5 Pot

4.5" Pot
 Also Know As:
   4.5" Container

 Plant Age:
   ~ 6 months
 Plant Size:
   ~ 3"-6"
 Pot Size:
   ~ 4.5"H x 3.75"W
   1.42 quarts

Quart Pot

Quart Pot
 Also Know As:

 Plant Age:
   ~ 1 year old
 Plant Size:
   ~ 4"-8"
 Pot Size:
   ~ 4.75"H x 4.5"W
   1.50 quarts

2.5 Quart

2.5 Quart
 Also Know As:
   2.5 Quart Pot

 Plant Age:
   ~ 1.5 year old
 Plant Size:
   ~ 8"-12"
 Pot Size:
   ~ 6.5"H x 6.5"W
   2.20-2.30 quarts

#1 Pot

#1 Pot
 Also Know As:
   #1 Container
    1 Gallon
 Plant Age:
   ~ 2 year old
 Plant Size:
   ~ 10"-14"
 Pot Size:
   ~ 7"H x 7.75"W
   2.26-3.73 quarts

#2 Pot

#2 Pot
 Also Know As:
   #2 Container
    2 Gallon
 Plant Age:
   ~ 2-3 year old
 Plant Size:
   ~ 12"-18"
 Pot Size:
   ~ 9.5"H x 9.5"W
   1.19-1.76 gallons

#3 Pot

#3 Pot
 Also Know As:
   #3 Container
    3 Gallon
 Plant Age:
   ~ 3-4 year old
 Plant Size:
   ~ 12"-30"
 Pot Size:
   ~9.5"H x 11"W
   2.32-2.76 gallons

For more detailed information, please click here.

Plant Addict Guarantee (Included On All Plant Orders)

Plant Addicts guarantees your plant(s) will arrive happy and healthy, but the plant(s) are being shipped through the mail and accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.

For information on how to care for you new plant please check out our guide. Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty whether you’re new or an expert. There are many variables outside our control and yours that can cause the demise of your plant(s). Examples would be hungry animals, drought, poor soil conditions, over watering, disease, insects & many other factors. The Plant Addicts Warranty is a 1 year warranty protecting you from all the unknowns and will replace your plant if it moves on to the plant afterlife.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant purchase. We will cover 100% of the price of the plant but the warranty does not cover shipping cost. Simply let us know if your plant has died within one year of receiving it and we’ll get you a new one shipped out. We may ask for photos for documentation purposes but again we’ll try to make it as easy as possible.

For more information, please go to our Shipping & Returns page at the bottom of the website.

Guide: How to Care for Your New Plant(s)

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations

Plant Shipping

Time of Order:

Summer Shipping

  • If there is extreme heat we’ll delay shipping.  
    • We’ll have to review what areas the plants are traveling through along with your location

Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.

It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.