In 1997, willow oak (Quercus phellos L.), swamp white oak (Quercus bicolor Willd.), and goldenraintree (Koelreuteria paniculata Laxm.) were planted in the right-of-way on Lorimer Street in Brooklyn, New York, U.S. This was one of the earliest commercial installations of the load-bearing stone-soil blends (hereafter called structural soil) developed at Cornell University's Urban Horticulture Institute (Grabosky and Bassuk 1995). The north-south street segment bisects McCarren Park between Driggs

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... Avenue and Bayard Street. Trees were planted as 5.1 to 7.6 cm (2 to 3 in) caliper trees on either side of the street. The west side trees were planted in a continuous trench of structural soil 0.6 m (2 ft) deep by 2.1 m (6.9 ft) wide down the entire block. The structural soil was used as the sidewalk base capped with concrete. Tree openings were 0.9 m by 1.5 m (3 × 5 ft), which were planted after paving and then covered by granite unit block pavers. The east side of the street was a tree lawn planted with the same tree species. The site and the trees have been observed and measured in 1999, 2000, 2003, and 2007. After 3 years, there were no substantial differences in either shoot extension growth or foliage quality between the two sites for the oak species (Grabosky et al. 2002). Goldenraintree was not analyzed or reported in the third year set. This article discusses the trees as observed in Year 6 (2003) and Year 10 (2007).