THIMBLE BERRY BUSHES
Thimble Berries are related to raspberries and blackberries. In nature they are an early succession plant which grows after a disturbance as the forest reestablishes.
To get them to bear fruit you should grow them in full sun or perhaps partial shade. The more shade the less fruit you will get. Control weeds and irrigate to maintain plant vigor. I would not fertilize heavily as this will cause the shoots to be to vigorous and reduce fruiting. In other brambles, fruiting is on 2 year-old shoots which die after fruiting so remove old dead shoots from you planting. Also if the planting is crowded with many new shoots remove some of these the following spring a spacing of 8 to 12 inches between shoots is good.