size of tuberous begonia tubers
I have one tuber (6 years old) that produces enoumous stalks over 3 feet tall, with spectacular, large orange flowers. This fall the tuber was so large that I decided to measure it. It is 9 1/2 inches long, 7 inches wide (at the widest point) and nearly 4 inches thick. Must weigh over one pound. I will have to increase the pot size again this spring in order to hold the bulb. It was given to me as a little seedling 6 years ago and I don't know the exact variety. Can anyone tell me if it is common for the tubers to become so large? Or do I have a freak on my hands?