The Tuscon cactus festival is quite the family friendly (and highly exciting)
event that you definitely don't want to miss.
Highlights include: guided hikes and tours through cactus patches, prickly pear lemonade, cactus candy, classes on how to make prickly pear beer, cactus jewelry, cactus art, and even cactus games for the kids.
for more information you can peruse the following links at your leisure: