Best in show
The town goes to the dogs when the Swarthmore Community Center holds its Dog Show at College Field. Enter your canine companion in any of the 15 categories. $3 entry fee per category. Free admission. Field at Harvard and Chester Roads, Swarthmore. 1 p.m. 610-543-3171.
To help the Concord Township Historical Society preserve the Thatcher Barn, Gallery One hosts a Barn Art Show. The show features works by more than 20 prominent local artists, many with an eye on the barn theme. Free. Gallery at 992 Baltimore Pike, Concordville. Opening reception 1 to 4 p.m. today. Show runs through June 10. www.concordtownshiphistoricalsociety.org; 610-459-5252.
The Delaware Valley Iris Society hosts an "Iris Spectacular" at Tyler Arboretum. All types of iris will be on display from bearded varieties to Siberian and Louisiana species. $5. Arboretum at 515 Painter Rd., Media. 1 to 4 p.m. www.dvis-ais.org; 610-334-8003.
Blues and wine
Enjoy wine tastings and cellar tours during Chaddsford Winery's Brandywine River Blues Festival. Pack a picnic and enjoy the sounds of local blues bands. $20. Winery at 632 Baltimore Pike, Chadds Ford. Noon to 6 p.m. Saturday and next Sunday. www.chaddsford.com; 610-388-6221.