What impact do humans have on the animals that live in the waters around us? See how what we put into the water affects even the smallest creatures at "From the Mouth of the River," a family-friendly performance that uses puppets and dance to raise awareness about a serious subject in an entertaining way.
Mum Puppettheatre, 115 Arch St. , 11 a.m. and 1:30 p.m., $5-$10, 215-620-2130 or
Meet the folkers
See early-American folk art and crafts at the 34th annual Mercer Museum Folk Fest. You can watch costumed artisans blow glass, weave on hand looms, shear sheep and demonstrate other skills from the 18th and 19th centuries that helped kick-start the Industrial Revolution.
Mercer Museum, 84 S. Pine St., Doylestown, 10 a.m. Saturday and Sunday, $6-$20, 215-345-0210 or
The historic Grumblethorpe House & Garden is the backdrop for a festive spring plant sale, featuring flowers, veggies and herbs to get your home garden blooming this season. Some of the plants were grown by the Grumblethorpe Educational Partnership Program.
Grumblethorpe Historic House & Garden, 5267 Germantown Ave., 10 a.m.-3 p.m, free, 215-880-5951 or