Page 18 - Tài liệu Ebook cây cảnh Bonsai and Penjing
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The 22 National Capitol Columns, installed at the U.S. National Arboretum in the 1980s, date from
1828 when they graced the U.S. Capitol’s East Portico.
The National Arboretum’s Asian Collections, begun in 1949, include a dazzling array of plants
where something is blooming every month of the year.
