The Best Soil Mix for Monsteras in Hot, Humid Climates

In hot and highly humid climates like Southeast Asia, your Monstera's primary risk is root rot from soil that stays soggy for too long. Standard potting soil is often too dense.¹

The goal of your soil mix must be to maximize aeration (air pockets for the roots) and drainage while still retaining some moisture.² Monsteras are aroids (tropical plants) and need a chunky, "jungle floor" mix.³

Here is the ideal DIY "Chunky Aroid Mix" recipe, followed by the role of each ingredient:

DIY Chunky Aroid Mix Recipe

Aim for the following approximate proportions. You can use any unit of measure (cup, quart, etc.) as long as the ratios are consistent.⁴

Component	Proportion (by Volume)	Purpose
Orchid Bark/Coco Chips	40% (The largest portion)	Airflow & Structure. Provides large, airy spaces; excellent drainage; mimics their natural environment climbing trees.
Perlite or Pumice	30% (Coarse/large grade preferred)	Drainage & Aeration. Prevents compaction; creates air pockets; lightweight.
Coco Coir or Potting Mix	20% (Minimal amount)	Moisture & Nutrients. Provides light moisture retention and initial nutrients. Coco Coir is generally better than peat moss in hot, humid climates as it re-wets easily and is more sustainable.
Worm Castings / Charcoal	10% (Optional but highly recommended)	Nutrition & Health. Worm castings provide slow-release nutrients. Horticultural charcoal absorbs impurities and helps prevent mold/bacteria growth.

Why this mix is best for Hot Climates

1. High Aeration (40% Bark/Chips): In hot weather, a plant's metabolism is faster, and it needs more oxygen at the root level. Dense, wet soil suffocates the roots. The bark ensures the soil remains loose and provides crucial air pockets.⁵

   
   

2. Rapid Drainage (30% Perlite/Pumice): High humidity means the air already holds a lot of moisture, slowing down the soil drying process. The high volume of perlite/pumice ensures water rushes through, making it nearly impossible to overwater accidentally.

3. Prevents Compaction: Unlike standard, peat-heavy potting soil, this chunky mix won't break down and compact quickly. This maintains excellent drainage and aeration over a longer period, which is especially important since your Monstera will grow rapidly in a tropical climate.

💡 Quick Tip on Watering

Because this mix is so chunky and fast-draining, you may need to adjust how you water to ensure the coco coir/potting mix actually absorbs moisture:

• Soak Thoroughly: When you water, do so slowly and completely until water pours out of the drainage holes.⁶

  
  

• Bottom Watering: If water runs straight through, place the pot in a tray of water for 20-30 minutes to allow the mix to absorb the water upwards.⁷