Of the two kinds of hsiang ku grown in Taiwan, that harvested in winter is more expensive than the spring or summer variety because it contains more spore.
香菇因採收期的不同分為二種：冬季生產的香菇，生長緩慢，子實肥厚，上面有凍裂的白色花紋，在菌傘七分開時採收，稱為「冬菇」；春秋季或高山夏季生產的香菇，生長速度較快，很快就開傘，在菌傘全開時採收，稱為「香信」。