The first version is by Larry Gross:
How can it stand so erect when its insides are empty?
Bamboo, I praise you in all seasons, standing green no matter what
The second by Kevin O'Rourke comes from his book, The Book of Korean Shijo:
Neither wood nor grass;
who made it straight, why is it hollow? So green all the year round; that's why I like it.
The third is my long-winded reworking ( with no regard for the technical rules of sijo composition):
Consider this: too skinny to be a tree, too thick to be grass;
You stand tall and strong, though insubstantial within.
Yet, despite the seasons, you remain steadfast in hue.
source:
http://thewordshop.tripod.com/Sijo/yunsondo.html
http://www.candlemaking.com/store/Bamboo-P2302C31.aspx?UserID=581291&SessionID=JvqIw2qWrguWYkTn4Ryr
