Which factor does NOT influence plant selection in landscape design?

When considering the factors that influence plant selection in landscape design, the popularity of the plant species is not a determining factor that should govern the choice of plants. While aesthetic appeal and current trends might suggest using popular species, the practicality of plant selection relies primarily on environmental conditions and compatibility with the landscape.

Temperature and hardiness zones play a significant role because they determine which plants can survive and thrive in a given climate. Similarly, the type of soil affects plant health and growth, as certain species prefer specific soil types, pH levels, or drainage capabilities. Available sunlight is also critical; plants have different sunlight requirements, and choosing plants that match the lighting conditions of a specific area ensures their successful growth.

Choosing plants solely based on their popularity can lead to issues like incompatibility with local growing conditions, ultimately resulting in poor landscape performance. Therefore, while the popularity of a plant species can influence aesthetic decisions, it does not fundamentally impact the ecological and environmental considerations essential for successful landscape design.