nostr:npub1sg87ny6jfx2ynn725ltts26s3rk4pt9sz4lmzd2uk7w56cdg3nzslp9xmy Oh at some point, you don't have to earth them up any longer, and just let them grow. you need enough soil on either side of the plants for the potato tubers to grow into. Also you don't want to unearth the potatoes and make them turn green.