Hello, I am trying to get my farming up to 70 so I can plant four Poison Ivy Bushes, it says in the farming guide that the bushes will produce more berries if I pick them and wait a certain amount of time. My question is how long does it take before it grows back four more berries?

Sorry, I misread your question. I'm not sure of the exact times, but I do know that it is quicker than waiting for a new one if you replant.

My white berry bushe replenish themeselves every couple of hours. Im sure its a little longer for Poison Ivy bushes, but it definately is quicker than replanting.