We all have full sun, your's just happens to be in the top of the trees in your yard.

The best bamboo I've found for a partial shade situation is Arrow bamboo, a hardy, drought-tolerant, non-aggressive, quick screening, large leaved runner that is endless source of high quality garden stakes. As far as loam goes, no amount of patience will give you loam. Loam is lovingly nurtured by a knowing hand that recognizes the circle of life and claims that knowledge as power by recycling death into rich new life, is there a higher calling?
