The city's Spring Fair and Pony Plop fundraiser will be held Sunday, May 20 at Spence Farm from 11 a.m. to 2 p.m.
The fair will include food vendors, community groups promoting wellness.
A 300-square grid will be marked off in the field. A pony will wander the grid and when she drops a "plop," the winner will win money.
Admission to the fair is free. Pony Plop tickets are available at Woburn Recreation at City Hall Monday through Friday between 9 a.m. and 1 p.m. Checks can be made payable to the Malcolm White PTO.