How do I Harvest? Only plants that have reached the Mature level can be harvested. Plants that have needs or bad pests cannot be harvested, so make sure you take care of your plants first! Once they're free of needs or bad pests, simply close your Gardening panel and approach the plant. A "Press X" option will appear and you will harvest items from the plant! Once a plant has reached the Elder stage, it can only be harvested one last time before it disappears.