Which two factors are essential for determining water requirements in landscaping?

• A. Soil type and plant species
• B. Evapotranspiration and climate appropriate plants
• C. Geographical location and landscape size
• D. Seasonal changes and pest control methods

Answer: (B)

In landscaping, understanding water requirements is crucial for creating an efficient and sustainable irrigation system. The correct answer focuses on evapotranspiration and climate-appropriate plants as essential factors for determining water needs.

Evapotranspiration refers to the total amount of water that is transferred from the land to the atmosphere through evaporation and plant transpiration. This measure helps landscape professionals estimate how much water is lost from the soil and vegetation, which is vital in planning for irrigation. It varies with weather conditions, such as temperature, humidity, and wind, making it a dynamic component that influences water requirements.

Choosing climate-appropriate plants ensures that the plants selected for landscaping are well-suited to the local climate conditions. These plants are more likely to thrive with less frequent watering as they have adapted to the specific environmental conditions of the region. Utilizing plants that align with the climate not only promotes biodiversity but also reduces the overall water demand, enhancing water conservation efforts.

Together, evapotranspiration and climate-appropriate plants provide a comprehensive understanding of how much water is necessary for a healthy landscape, ensuring efficient water use while promoting sustainability.