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Thai Constellation Monstera Care Guide

The Thai Constellation Monstera is a must-have on any serious plant-lover or plant collectors list. Boasting leaves of captivating cream and green marbled patterns, this unique plant has earned its name due to its striking resemblance to a starry night sky.










Overview

Thai Constellation Monsteras are highly coveted for their variegated leaves that mimic the beauty of a starlit night. Their rarity, coupled with the challenges of mass production, contributes to their higher cost.

It's important to note that while they look similar, Thai Constellation Monsteras and Borsigiana Albo Variegata (Albo Monsteras) are different plants, with Thai's exhibiting stable variegation compared to the less consistent Albo monsteras, and Albo's featuring more solid blocks of white compared to the Thai's 'splattering' style.

Care for these plants involves providing bright, indirect light, as their variegated leaves contain less chlorophyll. Inadequate light can lead to discolouration and stunted growth. Proper watering is crucial to prevent root rot, with a well-draining potting mix containing bark, perlite, and organic matter being essential for their health.

As climbers, Thai Constellations benefit from support like a moss pole as they mature, and they require less frequent repotting due to their slower growth.



How much light does a Thai Constellation need?

The creamy green leaves of the Thai Constellation result from a chlorophyll mutation, making adequate light crucial for its photosynthesis. Similar to its parent plant, the Monstera Deliciosa, the Thai Constellation thrives on bright indirect light. Avoid low-light conditions, as this can cause leaf discoloration and slow or stunted growth. Conversely, excessive sunlight may scorch the delicate leaves so no direct sun!




How often do you water a Thai Constellation Monstera?

As an epiphyte with sensitive aerial roots, Thai Constellations are prone to root rot. Proper watering is crucial; wait until the top inches of soil are dry before watering, adjusting the frequency based on seasonal variations. Signs of overwatering include leaf perspiration and dense soil, while wilting leaves and slow growth indicate under-watering. I recommend to only water when the soil feels dry to touch when you dip your finger into the pot (go all the way to your knuckle!)


What is the best potting mix for Thai constellation?

Selecting a well-draining soil mix with added bark and perlite is vital for preventing root rot - good drainage is key, as dense, heavy soil can be detrimental.

In their natural habitat, these plants grow in the moist forest floor, where the soil is rich in organic matter. It’s important to select a potting mix that mimics these natural conditions.

I recommend a blend of 20% perlite or Leca, 15% sphagnum moss, 15% orchid bark, 40% quality soil and 10% charcoal. This type of soil composition allows for proper drainage while retaining enough moisture for the plant’s roots to absorb. The sphagnum moss provides moisture retention, while perlite ensures good drainage.



Temperature & humidity needs

Maintaining temperatures between 20 and 30C is ideal for Thai Constellations. They thrive in tropical conditions, requiring at least 60% humidity for optimal growth. Avoid frost and chilly temperatures, and move them away from windows during cold winter nights.


Fertilisation

Ensuring robust growth for your Thai Constellation Monstera requires consistent feeding. Throughout the active growing season (spring and summer), opt for a well-balanced liquid fertiliser every few weeks. This routine supplies the vital nutrients necessary for vibrant variegation and the overall well-being of the foliage.

In their native habitat, these plants benefit from a continuous nutrient supply derived from decaying organic matter on the forest floor. To emulate this in a home environment, regular fertilisation becomes imperative. Our Plant Coffee liquid fertiliser delivers a comprehensive range of essential nutrients, supporting the plant's health and fostering growth.

Transitioning into the dormant season (autumn and winter), adjust the fertilisation frequency to once every two months or consider stopping fertilisation altogether. This strategic approach allows the plant to rest and conserve energy in alignment with its natural growth cycle.



How to propagate a Thai Constellation Monstera

While propagating a Thai Constellation can be challenging due to variegation inconsistencies, stem cuttings or water propagation remain the best methods.

  1. Choose a robust stem with a minimum of two nodes when embarking on propagation. Prioritize the selection of a healthy stem, free from any indications of disease or damage. Identify nodes on the stem, which are the points where leaves emerge. Utilize a clean and sharp knife or shears to make a precise cut just below a node.

  2. Before executing the cut, ensure the cleanliness and sharpness of your knife or shears. Opting for a clean cut promotes faster and healthier root development. Cut the stem just beneath a node, maintaining a clean and straight cut. Eliminate any leaves from the lower section of the stem, retaining only a few at the top.

  3. To stimulate root growth, it is imperative to remove leaves from the lower part of the stem. This redirection of the plant's energy fosters root development over leaf maintenance. Retain a few leaves at the top to facilitate photosynthesis. Submerge the cutting in a jar of water or plant it in a well-draining potting mix.

  4. Two widely-used methods for propagating Thai Constellation Monstera include water propagation and soil propagation. Opt for water propagation by placing the cutting in a water-filled jar, ensuring the cut end is fully submerged. Alternatively, choose soil propagation and employ a well-draining potting mix for planting the cutting. Ensure the cut end is submerged in water or properly planted in soil, and provide indirect light.

  5. Proper lighting conditions play a crucial role in successful propagation. Position the water-filled jar or potted cutting in an area with indirect light, avoiding direct sunlight, which can be too harsh for delicate roots. Monitor moisture levels, maintaining damp soil without reaching a soggy consistency.

  6. Maintaining the correct moisture levels is vital throughout the propagation process. Regularly check water levels for water propagation, ensuring the cut end remains submerged. For soil propagation, maintain damp soil without excess wetness, as overwatering can lead to root rot and impede the propagation process. After a few weeks, the development of roots will signify the success of the propagation.


Pests on a Thai Constellation Monstera

Similar to regular monstera deliciosa plants, Thai Constellations can be susceptible to thrips. Vigilance and prompt action are necessary to combat these pests.



How to keep your Monstera variegated

Pruning your Monstera Deliciosa can increase variegation. Cutting the stem back to the last variegated leaf may encourage more variegation growth.


Why is the Monstera Thai constellation so expensive?

The Thai Constellation's popularity and consumer demand, coupled with its origin through tissue culture in a Thai laboratory, contribute to its higher price tag. The plant's novelty and unique features make it a sought-after addition for plant enthusiasts worldwide.

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