Virtual Villagers Tips & Tricks, Walkthroughs, Guides, Hints and HelpLast Day of Work Official Forums: Virtual Families, Virtual Villagers, Fish Tycoon
Not exactly a "Plant Tycoon" upgrade idea, but a related idea for the developers. I have been playing "Plant Tycoon" so much that it has gotten into my sleep brain. Last night I kept having dreams about getting "seeds" from my Bernese Mountain Dog and developing new dog breeds.