What defines the best soil for succulents?
Written by
Julia Anderson
Reviewed by
Prof. Samuel Fitzgerald, Ph.D.The ideal soil for succulents contains three essential elements. Good drainage will keep your succulents alive - preventing root rot. Low organic content will not retain water. Mineral grit, such as pumice, will give it aeration. These attributes are similar to those found in their natural, drier environments. They flourish when given soil that mirrors arid habitats.
Drainage Efficiency
- Water must exit pots within 15 seconds
- Prevents root suffocation and fungal growth
- Test by pouring water through dry mix
Organic Content Balance
- Ideal range: 20-40% organic material
- Higher percentages cause water retention
- Use composted pine bark for nutrients
Mineral Grit Composition
- Pumice creates permanent air pockets
- Perlite floats and degrades over time
- Granite grit prevents compaction long-term
Compare soil components before mixing. Different drainage capabilities will result from various materials. Coarse sand is preferred over finer sand. Crushed granite is better than vermiculite. Use wisely, depending on your climate - dry regions require moisture-holding pumice, while humid climates need maximum drainage (with no more than 50% stone volume).
Develop your own soil mixes using dependable ratios. Start with two parts mineral grit. Add one part organic matter. Modify according to the specific types of succulents you are using. Desert cacti need more mineral content. Tropical varieties can tolerate more organics. Test each batch using the squeeze method.
Don't make the same soil mistakes. Never use standard potting soil alone. Skip decorative rocks at the bottom of the pot. Measure pH at least once each season. Refresh your soil every 2 years (minimum). Your succulents will thank you with good growth. Healthy roots lead to beautiful displays.
Read the full article: Best Soil for Succulents: Ultimate Guide
