Master Naturalist Help Desks

Questions and Answers about Natural Spaces

Are you interested in attracting more pollinators and birds to your garden? Would you like help identifying an insect, bird or mammal? Do you need information on our area’s natural areas? The Master Naturalist Help Desk is a free service that assists in finding answers to a variety of local natural resources questions. Please see the below contacts to which you can direct your questions – a Master Naturalist will return your call or email as soon as possible!

Bureau County

  • 850 Thompson Street, Becker Professional Suites, Princeton, IL 61356
  • Phone: 815-875-2878
  • Email:
  • June through October: Princeton Farmer’s Market, select Saturdays 8:30-1:00; Spring Valley Farmer’s Market, select Wednesdays 4:00-6:00.

LaSalle County

  • 1689 North 31st Street, Suite 2, Ottawa IL 61350
  • Phone: 815-433-0707
  • Email:
  • May through October: Ottawa Farmer’s Market, select Saturdays 8:00-12:30; Mendota Farmer’s Market. First Saturday of the month, 8:00-12:00; July through October: Oglesby Farmer’s Market, every Thursday 3:00-6:00.

Marshall and Putnam Counties

  • 509 Front Street, Suite 4, Henry, IL 61537
  • Phone: 309-364-2356
  • Email: