Installation of gardens are only truly successful if the individual managing the installation has considered all aspects of the job. A design is only as good as the preparation that goes into installation. Light consideration, control of irrigation or watering and soil composition. With all these areas managed correctly future concerns are greatly reduced and inconveniences avoided. Plant With Me lives and breathes preparation.
No guarantee is worth the inconvenience and frustration associated with newly planted material dying. Disturbing a newly developed garden due to improper installation (plants that die and have to be replaced a year later) is poor preparation based on failure to manage things correctly.