Reforestation With Bamboo Guadua and Dendrocalamus Asper. zone by zone. Additionally to the bamboo reforestation we have been able to identify local shrubs and trees that attract insects and birds because of their flowers. They are growing all over the areas so the seeds have been lying in the soil for some time and now they are sprouting. And they attract more bio-diversity. The bamboo does the same thing for the birds and reptiles.