What aspect of customer knowledge is not included in the design process?

The aspect of customer knowledge that is not included in the design process is understanding how a customer will maintain their landscape. While maintenance needs are an important consideration for any landscape design and can influence the design choices, they typically come into play after the design has been completed. The design process primarily focuses on creating a plan that aligns with customer preferences, visualizing the customer's desires, and ensuring the design is feasible and functional.

In contrast, understanding customer preferences, gathering feedback on design choices, and educating customers about landscape care are integral parts of the design process. These elements help ensure that the final design is both aesthetically pleasing and practical for the customer, fostering a sense of ownership and ensuring satisfaction with the design before it's implemented. Therefore, maintenance considerations, while crucial for long-term success, are usually secondary to the fundamental design discussions.