CSLB C-27 Landscaping ContractorPlanting and LandscapingEasy

A client requests a low-maintenance landscape design for a west-facing slope in a hot, arid climate. Which of the following plant characteristics is most crucial for long-term success in this environment?

  1. ARapid growth rate to quickly establish ground cover.
  2. BLarge, showy flowers for aesthetic appeal.
  3. CDrought tolerance and heat resistance.
  4. DShallow root system for easy transplanting.
Show answer & explanation

Correct answer: C. Drought tolerance and heat resistance.

For a west-facing slope in a hot, arid climate, plants must be able to withstand significant heat and lack of water. Drought tolerance and heat resistance are essential characteristics for survival and low maintenance in such conditions.

Why the other options are wrong

  • A. Rapid growth can increase water and nutrient demands, contradicting low-maintenance goals in arid conditions.
  • B. Showy flowers do not inherently contribute to survival or low maintenance in harsh climates; they can sometimes increase water needs.
  • D. Shallow root systems often make plants more susceptible to drought stress and instability, which is undesirable on a slope.

Xeriscape Plant Selection

Choosing plants adapted to arid conditions to minimize water use and maintenance in a landscape.

  • Focuses on drought-tolerant species.
  • Considers native plants.
  • Reduces irrigation needs.

Memory trick: Arid zones need tough plants, not thirsty ones.

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