
I suppose since I mentioned bamboo, I should also mention the contest between my paulownia tree and my timber bamboo. Both are rather young. I bought the paulownia on eBay. The first year it grew up, the second, it branched, and the third year it bloomed. Unsastified with its height, I chopped it down to the ground this spring when it started budding. Interestingly, the severed tree continued to grow for about two months. Meanwhile, a new shoot began growing from the base of the stump. It soon was growing about 2 inches a day.
After a couple months, my Bambusa oldhamii sprouted. It didn't shoot at all last year, so I was pleasantly surprised when it started shooting early this year.
The new culm on the bamboo quickly started growing 6 inches or more a day. So I decided to keep a log to see if it could catch up to the paulownia. So far it hasn't, but it's come within a few inches.