After finishing the collection, I could easily daily gather all nodes in my Hidden Garden. Today when I went there, I could press “Gather” on all nodes, but instead of getting the item in my inventory, the “Gather” option just disappeared.
P.S. Hidden Garden is a special bonus you get for finishing the Leaf of Kudzu collection. You can daily, once per account, gather things like carrots, pumpkins etc.
edit: for some reason forum showed me error (title too long) each time I tried to post this and when I finally succeded, it appeared on forum three times.