Which of the following is NOT a factor that influences landscaping project costs?

Seasonal color selection is not a factor that directly influences the overall costs of a landscaping project in the same way that design complexity, labor costs, and materials used do. While seasonal color selection refers to the choice of plants or flowers that bloom at specific times of the year, it does not inherently affect the fundamental elements of a project's scope, such as the difficulty of the design, the amount of labor required, or the types and quantities of materials needed.

Design complexity encompasses how intricate or challenging the project will be, which can significantly impact both labor and materials costs. Labor costs are influenced by the number of workers needed and the length of time they work, directly tied to the complexity and layout of the design. Materials used, such as types of plants, soil, mulch, and hardscape features, directly affect costs due to their varying prices and quality.

In contrast, seasonal color selection may alter the aesthetic appeal of the project but does not quantitatively influence the labor or materials budget directly. Its implications are more about the visual aspects of the landscaping than the quantitative budgeting of the overall project.