Hi I am Dr.Fix-It , Your online expert ready to assist you..
Regarding your landscaping inquiry, you can lay down some weed blocking fabric that will help provide a barrier but still let water drain too. Then can find the rocks to match your taste such as natural river rock, white marble rock, even red or black lava rock. Also if looking to do allot of space can look up some local rock quarry to get a better deal for the material.
Well hope that helps, have a look at the underlined links with a click, and let me know if have any questions. thanks