RWP Landscape Materials is a major supplier to Cal Trans, county government, numerous cities and many, many school districts. It’s hard to drive anywhere in Southern California and not see our blower installation trucks at work. At school yards, city and county parks and most obviously along our California freeways, you’re bound to run into us. No doubt you’ve driven by miles and miles of our “CT Spec Mulch” along our freeway system. Our mulch conforms to Cal Tran’s standards and is approved by Cal Trans.