what is under the stucco you used for the vegetable boxes? - I am concerned that toxic materials will come in contact with the veggies and soil--like glues or other materials in the stucco. »
Sage Design Studios, Inc. CMU block, stucco finish with precast double bullnose cap. You can see the issue with waterproofing or improper installation of, by the hard water deposits. Vegas water is highly alkaline.