so i logged on tonight to do my garden, and my xp was 701000/703000 (or something like that); i was super close to leveling and, while harvesting my first plot of elder magma peas got me my verdant gardener badge, my xp bar did not change.
so i went to the second plot and harvested those; xp bar did not move, despite me receiving 3000 xp per pea (and i have 16 of them in each plot).
either that amount of xp is the highest we can go, or something is broken. would appreciate it if someone could look into this.