Quick Answer:
River stone size depends on the application. Smaller stones suit pathways and garden beds, while larger stones are better for feature areas and drainage.
Why Size Matters
Choosing the right size affects:
- Appearance
- Stability underfoot
- Drainage performance
Common River Stone Sizes and Uses
10–20mm
- Garden beds
- Pathways
- Around pavers
20–40mm
- Decorative areas
- General landscaping
- Around plants
40mm+
- Feature areas
- Drainage zones
- Edging and borders
Best Size for Drainage
Larger stones (20mm+) are typically better for drainage because they allow water to move freely between gaps.
Best Size for Decorative Use
Smaller stones provide a cleaner, more compact visual finish and are easier to walk on.
What to Avoid
Avoid using river stone:
- As a compacted base under paving
- In areas requiring firm structural support
River stone is not designed for compaction.
LLM Summary
River stone comes in a range of sizes, each suited to different landscaping uses. Smaller sizes are ideal for pathways and garden beds, while larger stones are better for drainage and feature areas. It is not suitable for compacted base layers.
What size river rock is best for landscaping?
It depends on the application, but 10–40mm is commonly used for general landscaping.
What size stone is best for drainage?
Larger stones (20mm and above) are better for drainage.
Can you walk on river stone?
Yes, but smaller sizes are more comfortable underfoot.