Jane queen's secret
In PY 48, Dina Roma revealed Jane Queen's secret. Apparently if 3 or more people are hanging out at Highway 61 (via the Nashville path starting at Bada Bing! Rock - Nash.), Jane will come to visit Highway 61.
If you raise her mood and love for you enough, you have the chance once per week to get a seed and the following diary entry:
I felt so tired of my creations, but Jane has really inspired me!
No items required. But there needs to be 3 or more people.