Add natural color and character to your landscape with 40mm Montana Rainbow Rock, a smooth decorative stone featuring a blend of warm earth tones. This rounded river rock is ideal for creating vibrant, low-maintenance landscapes in both residential and commercial projects across Calgary.
Why Choose 40mm Montana Rainbow Rock?
- Multi-color blend – Mix of browns, tans, greys, and subtle reds for a natural look
- Rounded, smooth texture – Clean finish that is comfortable underfoot
- Decorative impact – Larger size creates strong visual presence in landscape beds
- Low maintenance – Helps reduce weeds when installed with landscape fabric
- Excellent drainage – Ideal for water flow and drainage applications
Common Uses
- Decorative ground cover for garden beds
- Rock gardens and feature areas
- Drainage zones and swales
- Around patios, pavers, and retaining walls
- Accent borders and focal points
- Commercial landscape applications
Product Details
- Size: 40mm decorative rock
- Material: Natural river rock
- Color: Mixed earth tones (brown, tan, grey, subtle red)
- Shape: Rounded
- Coverage: Approx. 100 sq ft per cubic yard at 3" depth
- Delivery Method: Loose bulk by dump truck
Material Calculator
Enter your project dimensions below to estimate how much 40mm Montana Rainbow Rock you need.
Delivery Information
- Standard tandem delivery (1–10 yards): $120 within the City of Calgary
- Additional charges will apply for surrounding areas outside Calgary
- Same-day / next-day delivery may be available, but we recommend ordering 1–3 business days in advance
- Maximum 1 product type per tandem load
This product will be delivered loose by dump truck and dumped as per your instructions. Please visit our delivery page for delivery information and instructions prior to placing your order.
The driver will call when on route.
Ordering Instructions
- Please place each bulk order separately if you need different delivery days
- Sod and bulk deliveries can be staggered when ordered separately at checkout
- Placement and dump instructions can be coordinated during checkout
- Recommended lead time is 1–3 business days
Need Help Ordering?
Call 587-330-4200 for product availability, delivery pricing, and help calculating your order.
Want to see it in person? Visit our 2,500 sq ft yard display today.


