Trees　and　plants　are　important　elements　of　outdoor　scenes,　therefore,　it　makes　demands　of　research　involved　in　computer　graphics　on　methods　to　realize　the　natural-looking　trees　and　plants　in　various　environmental　condition,　such　as　windy　or　stormy　weather,　to　contribute　more　facticity　to　the　virtual　reality.　The　paper　starts　from　introducing　the　general　background.　Then,　an　approach　adopting　a　series　of　statistical　curves　as　inputted　parameters　of　tree　morphogenesis　and　motion　depiction,　which　represent　ramification　modes,　phyllotaxes　or　motion　profiles　of　leaves　and　stems.　Finally,　some　experimental　models　in　virtual　scene　were　showed.　We　focus　on　the　faithful　morphogenesis　of　tree,　swaying　motion　in　wind　and　the　appropriate　rendering　speed.　Aside,　all　the　inputted　statistical　curves　can　be　modified　interactively　to　integrate　the　research　work　of　botanists　and　other　experts,　which　vary　with　species　and　districts.　Within　this　methodology,　various　plant　models　can　be　created　easily　and　rapidly　without　any　botanic　background,　and　faithful　motion　of　tree　in　wind　can　be　simulated　easily　with　proper　engineering　accuracy　and　effective　computation.　Copyright　©　2009　by　the　Association　for　Computing　Machinery,　Inc.