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This experiment was conducted to investigate the effects of size and planting depth of pseudobulb on the growth and flowering in Bletilla striata. The smaller pseudobulbs than 6-7 ㎝ long in pseudobulb circumference showed the poor growth of shoot and pseudobulb, and did not flower at all. When the pseudobulbs of 8-9 ㎝ long were planted, the rate of flowering was low and flower number was few. The pseudobulbs of 10-11 ㎝ long exhibited the better growth of shoot and pseudobulb, the higher flowering rate (80%), and the more flower than the other treatments. Pseudobulbs planted into 0 ㎝ or 15 ㎝ deep showed the poor growth of shoot, pseudobulb, and flower. However, when pseudobulbs were planted into 10 ㎝ deep, the growth of shoot and pseudobulb was better and rate of flowering (70%) and flower number increased.
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