Hello. I wanted to submit a design that would work beyond "just bamboo", as you currently and potentially in the future will be using more than bamboo in your materials.
As you may have already guessed, the space between the loops of the letters have been colored in, to signify leaves. This is to signify the overall theme of eco-friendly products for the consumer, and gives you great flexibility when positioning your business in the market.
I've not used an icon that's separate from the text, but would be happy to include one if you feel that is your preference.