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The Patio Construction Material This Landscape Designer Won’t Ever Work With
Molly Sedlacek, founder of ORCA, a landscape design and outdoor product studio, advocates for permeable landscaping, moving away from traditional concrete patios and walkways. She highlights that concrete's impermeability prevents water from moving through it, necessitates drainage, and hinders microorganisms beneath, leading to cracking, pooling, flooding, and root rot as the earth shifts. Sedlacek's approach involves setting hardscaping materials in sand layers with elevated joints, enabling free water flow underneath and around them.
Sedlacek implemented her permeable landscaping philosophy in her own Los Angeles home. Her yard, initially lacking a garden, became a canvas for her ideas. She began by leveling the lower yard, a 30-foot long and 25-foot wide space, and transforming a smaller upper patio into a functional area. Her home's location at the bottom of a hill meant it collected neighborhood water runoff. To manage this, she constructed a retaining wall using large, permeable boulders sourced from Santa Paula, allowing water to pass through instead of accumulating. For privacy, she installed a steel fence, enhancing it with wide-plank rough-sawn redwood stained with a chemical-free, fungus-based treatment.
For the upper patio, Sedlacek replaced builder-grade Saltillo tile with locally made clay pavers from Sacramento, emphasizing local sourcing to reduce freight distance and support California manufacturing. She integrated glass blocks into the design, facilitating natural light transmission to her office/studio below. Incorporating a personal touch, she layered in old cobblestone pavers from her landscape designer parents' nursery in Oregon. She used a contrasting tan decomposed gravel against the stone and bay laurel perimeter in her smaller space, a technique she believes visually expands the area.
Sedlacek’s design also emphasizes permanence in elements, contrasting with the transient nature of plants. Seating in her outdoor space includes custom ORCA chairs and thick pieces of coastal live oak from Angel City Lumber, a company that upcycles fallen trees in Los Angeles. These oak beams were meticulously placed to mimic logs in a forest. Beyond her personal garden, ORCA projects frequently incorporate swales (long trenches) and water catchments, especially where home foundations are lower than the natural ground grade, to prevent poor drainage and celebrate natural landscape features. Drip irrigation is also a key recommendation for efficient water delivery to plant roots, promoting plant establishment and conserving water.
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