Feeding potatoes in bags.
I was advised to feed my potatoes which are in bags. They are growing nicely and have reached the top of the bags. Due to all of the rain we have had , the compost is really wet so making it impossible to water any feed in. Should I be covering them to keep the rain off so that I can then feed them or should I expect a fair crop as they are. New to this veggy growing thing as you may guess.