Julia and Princess Margaux always love to visit the forest and forage there. Elaina can guess the reason why.
Princess Margaux, despite being a princess, loves nature and loves to work with dirt, animals, and plants more than handling tea, social gatherings, socializing, shopping in stores, and cosmetics. She also likes the fact that she can practice her Druid abilities passively while in the forest, allowing her to slowly but surely master the powers that she can't practice if she is currently staying in the castle.
On the other hand, Julia is taking advantage of this time to broaden her knowledge in identifying medicinal herbs in the wild. She compares most of the things she sees using the little booklet she said to be a gift from the one who teaches her magic and apothecary practices. Because she is a fast learner and pretty much adept in doing things like that, she excels a lot in this aspect and even Elaina appreciates the way Julia knows more than she does.