You will need at least a couple hundred thousand BitBeans to earn a good amount from sprouting. 100k will most likely see you earning a sprout every 3rd or 4th day depending on the network weight which is currently low and is a good time to sprout beans. Yesterday I sprouted 3 times in the one day which is the most for me so 3k beans and already sprouted another 1k beans today. That now makes it 7 days in a row sprouting beans and like I said I believe it's because the network weight is down a little as people are trading this coin on exchanges right now. As I see BitBean as a long term hold then I don't mind sprouting now while I can earn as many beans as I can. By the way I have just over 500k beans sprouting.