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Water Conservation and Drought-Tolerant Landscaping Flashcards

6 cards from real C27 LICENSE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Water Conservation and Drought-Tolerant Landscaping flashcards as text

  1. What is the 'establishment period' for drought-tolerant plants?

    Answer: The period of supplemental irrigation needed until plants develop self-sustaining root systems

    The establishment period is a temporary irrigation phase — typically one to two years — during which newly planted drought-tolerant plants develop deep root systems.

  2. Which grading technique best helps retain rainwater on-site in drought-prone landscapes?

    Answer: Creating swales and berms to direct runoff toward planted areas

    Swales and berms channel rainwater toward planted areas, improving infiltration and reducing off-site runoff — a key technique in water-harvesting landscapes.

  3. What is the primary water conservation benefit of permeable paving in a landscape?

    Answer: It allows rainwater to infiltrate into the soil rather than running off

    Permeable paving allows rainwater to pass through the surface and recharge groundwater, reducing runoff and supporting on-site water retention.

  4. What is 'graywater' and how is it applicable to California landscaping?

    Answer: Lightly used household water from sinks and showers that can legally be reused for landscape irrigation

    Graywater is lightly used water from household sinks, showers, and laundry that California law permits to be reused for subsurface landscape irrigation under specific conditions.

  5. What is the purpose of a Landscape Irrigation Audit required under California's MWELO?

    Answer: To verify irrigation system efficiency and identify water waste or over-application

    A landscape irrigation audit evaluates distribution uniformity and system efficiency to identify waste, over-irrigation, and opportunities to meet water budget requirements.

  6. Which practice best supports California's goal of reducing potable water use in landscapes?

    Answer: Using recycled (reclaimed) water for irrigation where available

    Using recycled or reclaimed water for landscape irrigation reduces demand on potable water supplies and is encouraged or required in many California water districts.