What is a recommended practice for improving soil quality in landscape architecture?

Incorporating organic matter into the soil is highly recommended for improving soil quality in landscape architecture. This practice enriches the soil with essential nutrients, enhances its structure, and boosts its moisture retention capabilities. Organic matter, such as compost, decomposed leaves, or manure, not only provides nutrients to plants but also promotes beneficial microbial activity, which in turn helps in the breakdown of organic materials, further enriching the soil.

Additionally, the presence of organic matter improves soil aeration and drainage, which are critical for healthy root development. It helps maintain an optimal pH balance, making nutrients more available to plants. This practice aligns with sustainable landscaping principles, promoting a thriving ecosystem.

The other options suggest practices that lack the holistic benefits associated with incorporating organic matter. Relying solely on synthetic fertilizers may lead to nutrient runoff and soil degradation over time, while leaving the soil untouched can prevent necessary aeration and nutrient cycles. Opting for the highest-priced fertilizers does not guarantee improved soil quality; price does not always correlate with effectiveness or sustainability.