IOWA CITY, Iowa — Heirloom tomatoes — non-hybrid varieties passed down through generations — are the focus of an annual event hosted by the Johnson County Master Gardeners. The 10th Annual Taste of Heirloom Tomatoes takes place from 2-4 p.m. Sunday, Sept. 7, 2025, at the Plum Grove Historical Home, 1030 Carroll St., Iowa City. […]