Landscape Architect & Specifier News

JAN 2017

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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48 Landscape Architect and Specifier News "We started with nonblooming plants, Mondo grass and asparagus ferns," said superintendent Michael Frazier. "We assembled the modules with the soil medium inside fabric bags at our nursery, then laid them flat under shade." Rotolo coordinated the planting of the other varieties with neighboring nurseries. "We needed the plants to establish their roots by a set time, so that when they were set vertically they would be self-supporting and looking their best," Frazier added. "With the VGM system, you'll need five to eight weeks to establish the plants, otherwise they go into shock when you install the wall," explained Luis Andrade, a Ewing specification manager. Constructing the wall took two days, with drip emitter spikes going in the modules as the crew built up the wall's columns. What Healthy Watering Means for a Green Wall Green walls require a balanced, consistent irrigation, care and attention beyond what a typical lawn requires. "We consulted with colleagues who had built green walls. Their biggest warning was to make sure the irrigation designed worked correctly," Broussard said. "If you water every module the same amount of time, the water from the top migrates down and the bottom modules get too much water. If you reduce the irrigation time to mitigate that effect, the top modules don't get enough water." The green wall is irrigated with ¾" blank drip tubing in six zones, with ¼" distribution tubing hooks onto 265 multi-outlet emitters to Right: LED fixtures illuminate the green wall and entrance. PHOTO: EWING Resurrection Right: In "Resurrection of a Garden" ( www.landscapeonline.com/research/ article.php/8689 ), by editor Stephen Kelly (LSMP April 2007 issue), John Hopper, then director of New Orleans City Park, described the damage to the park after Katrina made landfalls in southeast Louisiana as a category-3 storm on the morning of August 29, 2005. When the levees were broached, 90% percent of the park was under water (one to eight feet deep) for up to three weeks. Saltwater entered the park and killed or damage most of the grass (including that of the three golf courses) and vegetation in the New Orleans Botanical Garden (NOBG). Pine trees snapped by the dozens; a thousand trees toppled, with hundreds more dead or dying. Before the hurricane, City Park had 260 employees, but by Aug. 2006 all but 23 employees were laid off. Aided with a $1.1 million grant from the Azby Fund, the Botanical Garden was restored. This early 2006 photo shows horticulturist Melinda Taylor planting annuals in the garden. The NOBG reopened to the public on March 4, 2006, a little over six months after the flooding.

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