Yay, new words! Actually, a 'dendrological' garden is really just... an arboretum; an arboretum with lots of shrubbery in the mix. This fenced garden belonging to the Poznań University covers over 20 hectares and features over 800 different kinds of trees (see how many you can hug), plus Europe's most valuable collection of raspberries and blackberries. Yum. Next door is the medical plant garden if you simply can't get enough of this stuff. To get there take bus 60 from 'Małe Garbary' to 'Wojska Polskiego.'