I tried a dozen bamboo fiber pots with mixed results. I bought 2 1/2 inch size pots that I had to drill holes in the bottom of the pots for drainage, easily accomplished. I was looking to use these pots to root succulent offsets. Normally I used small plastic pots for this job but decided to try these bio-degradable bamboo fiber pots. My plan was to root the offsets and either move them up to bigger pots or plant them in the ground. The problem I encountered was that I was growing these offset plants in bamboo fiber pots on a table. The pots actually look and feel like plastic but are definitely bio-degradable. After a year of use, every pot had the bottom fall off when the pot was lifted or were cracked and the bottom was barely attached. I also found no evidence that roots could actually grow through the wall of the bamboo fiber pot. If the pots were planted totally in soil the results might be more acceptable. They just didn't work well for what I needed.
