Thanks for the reply Stonehenge.
I am currently living in Vancouver, British Columbia (Originally from Vancouver Island, thus my handle).
We have several good Landscape Centre’s, which seen to have a good variety of material. I am just having a little trouble fully identifying a similar product.
For example the follow link is for product that is sold at a local landscape centre in my area:
Landscape Centre Inc - Bulk Materials: River Rock, Lava Rock, Bark Mulch, Premium Top Soil, Garden Mix...
Do you see a material you would recommend? Do you use the same material for the whole base?
Island Mike