The tops on my potatoes are about 3ft. 1mtr high. is this getting too big. I'm frightened they are all going to be tops and no Potatoes.
I wouldn't worry about it - mine always do the same and then flop over but they still give great crops. Did you use a potato fertilizer when you planted them? General fertilizers have too much nitrogen which leads to excessive leafy growth so one specified for potatoes is best.