(1) For the millennium the hotel planted 600 trees to create an arboretum .(2) This text was assembled by two botanists at the Morris Arboretum, the official arboretum of the Commonwealth of Pennsylvania.(3) At the northeast corner of the arboretum is the wooden Tree House.(4) u2018There were all the signs of it being a spectacular autumn but if you look around the arboretum a lot of trees are still green,u2019 he said.(5) Each year more than 500,000 visitors from all parts of the world visit the 9,000 different kinds of plants growing at the arboretum .(6) Observing different shrubs in a nearby arboretum , nursery, or on neighboring land can be helpful in making your choices.(7) It is one of the first trees in the arboretum to come into leaf and flowers prolifically with large creamy/pink blossoms in spring.(8) During this period, Corona planted a new arboretum and created the bog garden and a walk was completed from the lodge to the house.(9) More than a thousand conkers had been harvested from the arboretum 's 102 horse chestnut trees for use in a variety of games.(10) The tree photographed here, a fine old weeping variety, is among the five dozen kinds of flowering cherries in the arboretum 's collection.(11) Since that time a botanical garden and an arboretum for native and endangered Hawaiian plants have been established in Waimea Valley.(12) The oxygen sensor was inserted through the bark side in the same way as for the trees in the arboretum .(13) By being very u2018kid friendly,u2019 many botanical gardens and arboretums are attracting a wider array of visitors, thanks to the addition of gardens designed especially for children.(14) Founded in 1984, the Center is supported by a consortium of 29 botanical gardens and arboreta throughout the United States.(15) Before you buy, take advantage of the abundant references on gardening at local libraries, universities, arboretums , parks where trees are identified, native plant and gardening clubs, and nurseries.(16) Visit native plant nurseries and local botanical gardens and arboreta to learn which ones best fit your site.