What do you think is the easiest way to level up in gardening? For me, it's definitely planting key limes, as they become elder in a few days and give 3000 XP at the elder harvest. Also, they have a chance at giving a key lime seed during normal harvest, and definitely give a key lime seed at elder harvest. With just these plants, I'm now a grandmaster gardener (Level 15). What do you guys think? Do you have a certain plant(s) that help you level up in gardening quickly?