Thai Constellation Monstera

Monstera Deliciosa ‘Thai Constellation‘ a.k.a Variegated Monstera


Thai Constellation Monstera

Thai Constellation Quick Overview


Full Size8 foot high
LightBright indirect light
Temperature68-86˚F
(20-30˚C)
HumidityMedium-high
Cost$$$
Care LevelMedium
ToxicityToxic

Thai Constellation Monstera are one of the most sought after indoor plant species. This special variety of variegated Monstera Deliciosa descends from a single tissue culture laboratory in Thailand, thus its fitting name. Due to it’s lineage transcending from a singular location, supply has become a big issue for this ever increasing in popularity plant.

The lack of supply and high demand has caused the prices of Thai Constellations to soar. It is not uncommon for young plants to start upwards of $250 AUD ($190 USD) and mature plants greater than $1000 AUD ($750 USD). The degree of variegation also plays a factor in pricing, with higher variegation bringing higher prices.

It’s beautiful deep green, high fenestration leaves are littered with white patches of variegation. The foliage resembles that of a night sky filled with stars (constellations).

Size

When kept indoors with proper care you can expect your Thai Constellation to reach up to 8 feet in length (2.5M) with the leaves reaching 3 – 12 inches (7cm – 30cm) wide. Its faster growing cousin Monstera Deliciosa can grow up to 60 feet or more in the wild so make sure you have a good pair of pruners.

Light Requirements

Thai Constellation prefer to be positioned in bright indirect light for best growth and require this to thrive. Unlike normal Monstera Deliciosa plants, the variegation on the Thai Constellation leaves can’t absorb light meaning the plant needs to work harder to photosynthesize so low light conditions aren’t recommended.

A sign your Thai Constellation is not getting enough light is slow growth, leaf discolouration or mature leaves growing without splits. You should keep your Thai Constellation out of direct sunlight as it can cause damage to the leaves. This can be resolved by changing the position of your plant to somewhere that better suits its light requirements.

Temperature

Thai Constellation will perform best when in an area which maintains a temperature of 68-86˚F (20-30˚C). Being kept outside of this temperate range for prolonged periods of time can lead to poor plant health.

Humidity

Maintaining a medium to high humidity will assist in keeping your Thai Constellation happy and healthy. Being primarily raised in a laboratory and closed environment they are use to high levels of humidity, especially as young plants.

If your plant is housed in a spot with a humidity level consistently outside of this range it can lead to health issues and damaged leaves. A sign that the air is too dry for your Thai Constellation is browning tips and edges on the foliage.

For information and tips on how to increase or decrease humidity levels click here. Greenhouses are also a great way to gain better control over environmental conditions, you can read more about growing indoor plants in greenhouses here.

Watering Requirements

You can expect your Thai Constellation to require water at least once a week. When watering your Monstera, be sure to water thoroughly allowing water to drain completely. Aside from solely relying on the watering frequency to tell when your plant is thirsty, a tell tale sign that your Thai Constellation needs water is when the top two inches of soil is dry.

Make sure that all water is drained completely so that your plant isn’t sitting in water. Over-watering your plant can result in issues like black leaves and root rot. If you notice the plants leaves are going pale in colour or yellowing, this can be a tell-tale sign of over watering.

Fertilizing requirements

As a rule of thumb, your Thai Constellation should be fertilized sparingly every 4-6 weeks during growing months (Spring/ Summer) with an indoor plant fertilizer. Liquid indoor plant fertilizers are a great way to easily provide your plant the nutrients it needs.

During the colder months your Thai Constellation will enter a period of stunted growth/ dormancy. In this time the amount of nutrients it requires drops as it is not actively pushing new growth. Avoid fertilizing during this time as it is not necessary and can lead to health issues. Burnt foliage, wilting and stunted growth are typical signs of over fertilizing.

Soil Requirements

Thai Constellations like to be in moist but not wet soil. They require a peaty, well draining soil that is high in organic matter. A typical mix of premium indoor potting mix with additional perlite for drainage will assist in creating a well draining soil mix.

Diseases & Pests

The most common diseases and pests that you can encounter whilst caring for your Thai Constellation are spider mites, scale insect and mealy bugs. Monstera, as previously mentioned, are also known to develop root-rot if over-watered. For a majority of the mentioned pests the best prevention is keeping a strong, healthy plant as this gives it the best fighting chance and immune system.

For a wider range of information on combating indoor plant diseases and pests click here to see our pests and diseases page.

Toxicity

That Constellation are considered to be toxic to humans if ingested. Consumption of the plant (especially in large quantities) can cause symptoms including; burning of the lips, throat and mouth, difficulty breathing or swallowing, nausea and vomiting/ diarrhoea. If these symptoms occur make sure to seek the appropriate medical attention.

Thai Constellation Monstera are also toxic to pets, especially cats and dogs. Due to their smaller size, less of the plant is needed to be consumed to cause an adverse effect. ‘Signs that your pet may have chewed on or ingested part of your Fruit Salad Plant include intense burning or irritation of the mouth, tongue or lips, excessive drooling, vomiting and also difficulty swallowing.’ (Pet Circle)

The sap of Monstera Deliciosa Thai Constellation is also known to cause minor skin irritation. We recommend wearing gloves when handling fresh cuttings.


If you found this article helpful make sure to subscribe to our mailing list to get the latest Indoor plant tips and care guides. Also make sure to checkout our Facebook and Instagram pages for daily plant pics.