When is it the right time to harvest black currants? You can harvest black currants in July in zone 5a. It was July 31, 2022, when we harvested back currants in our garden. Black currants (Ribes rubrum) are ripe after red and white currant varieties we have in our garden. How do you know when … Continue reading How do you know when black currants are ready to pick Start your garden to save money in groceries