Maybe something like I.D. the mystery plant first one wins the plant. Alphabet plant list, first one to make the whole alphabet of plants wins, or if not whole alphabet maybe most in certain time. To get folks mingling with each other name tags not only have names but also write the name of a plant ...the person who gets the name of the most people in his/her plant family wins. Hide a few 'WEED' stickers around the room the person who has the most weeds pulled at the end of 'mingling' time wins.

Thanks much.....those are good ideas!

Make a list of say 20 words, scramble the letters of each word. ie dnaerg - garden, wlfore - flower Have fun.