榔榆,在沂蒙山区俗称鹞榆,多分布在海拔500米以下的山坡上。因受生长环境和人工砍伐的影响,一些老桩多具疙瘩、洞穴,虬曲之状,呈现苍古之美;加之枝綮叶小而密,耐移植、蟠扎、修剪,可塑性强,堪称培植盆景的上好素材。笔者经过四五年的实践,初步掌握了培植榔榆盆景的一些方法。概括地讲,就是要把好四关: 一、时间关适期采挖,是保证榆桩成活的关键。在沂蒙山区,采挖榆桩的最佳季节是2月下旬～4月初,以3月份成活率最高;其次是11月。其它时间采挖移植则很难成活。 Palm elm, commonly known as Elm in the Yimeng Mountains, are mostly distributed on hillsides below 500 meters above sea level. Due to the growth environment and the effect of artificial deforestation, some old piles have many problems such as pimples, caves and curls, showing the beauty of Canggu. In addition, branches and leaves are small and dense, resistant to transplanting, sticking, pruning and plasticity. Bonsai good material for cultivation. After four or five years of practice, the author has initially mastered some methods of cultivating bengal elm bonsai. In a nutshell, it is necessary to make a good four-pass: First, digging at the appropriate time is the key to ensuring the survival of Yuzhu. In Yimeng mountainous area, the best season for digging elm piles is from late February to early April, with the highest survival rate in March; followed by November. Digging and grafting at other times is hard to survive.