20mm Montana Rainbow Rock is a beautiful smooth decorative stone sourced from Montana riverbeds. Known for its stunning mix of natural earth tones — including pink, purple, red, blue, green, tan, and grey — this 20mm (approx. 3/4″) rounded rock brings instant visual appeal to any outdoor space.
Key Features:
- Smooth, rounded shape (river-washed)
- Vibrant multi-colour blend
- Low-maintenance and weed-suppressing
- Excellent drainage
- Durable and fade-resistant
Popular Uses:
- Garden beds and ground cover
- Walkways and pathways
- Pond and water feature edging
- Tree rings and accent areas
- Patio borders and dry river beds
Why Customers Love It: This premium decorative rock is a top choice across Alberta for its natural beauty and versatility. Unlike crushed road base, the smooth edges make it comfortable underfoot and safe around pets or kids.
Coverage & Specs:
- Size: 20mm (3/4″)
- Coverage: Approx. 100–120 sq ft per cubic yard at 3″ depth (varies by depth)
- Weight: ~1.3–1.5 tonnes per cubic yard
Pro Tip: For best results, use landscape fabric underneath and combine with smaller sizes or larger cobbles for layered designs.
