The research entitled the influence of soaking dura- tion and the concentration effect of IBA toward the orchid growth of Vanda gentabandung was carried out at borobudur Orchid Park in Magelang regency, from august 1990 January 1991. to The experiment was factorial based on Complete Ran- domized Design (CDR) with two treatment factors and three replication. The factors were as follows: a. So…