How should I adapt soil for different climates?
Written by
Michael Sullivan
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.Orchids require potting soil that is compatible with your local climate. Using a generic mix can lead to root rot (if the mix is too dense) or dehydration (if too lightweight). As humidity, temperature, and other variables vary greatly from place to place, Climate‐specific adjustments to the mix are needed for orchids to flourish year‐round! Read on for tips on making adjustments for your environment.
Arid Climates
- Moisture retention via 40% sphagnum moss
- Water crystals added to base layers
- Shallow pots reduce evaporation surface
- Morning misting supplements soil hydration
Humid Tropics
- Maximum drainage with 70% lava rock
- Charcoal layers prevent fungal growth
- Elevated pots enhance airflow
- Reduced moss to avoid waterlogging
Temperate Zones
- Balanced blend: 50% bark, 30% perlite
- Seasonal adjustments for humidity shifts
- Clear pots monitor moisture changes
- Wind protection for outdoor plants
Changes in the seasons require modifications to the soil, so I make adjustments accordingly. Without hesitation, I increase drainage before the monsoons, and before dry winters, I add moss layers. I modify the blend every quarter based on the weather forecast, and your orchids are thanking you with their everlasting root growth.
Salt resistance becomes increasingly important for those living near the sea. Coconut husk is preferable to bark in coastal areas. I use a mixture of 30 per cent coconut husk in my seaside garden. Rinsing the pots once a month will help remove salt deposits, allowing your orchids to thrive in the saline atmosphere.
Test adapted soils before full implementation. Check drainage times and note any changes in root color. I run small trials on divisions first. Your customized mix will effectively address climate-specific challenges.
Read the full article: Best Soil for Orchids: Expert Guide
