Heart of Iowa Market Place in Valley Junction has signed an exclusive agreement with Stone Cliff Winery in Dubuque to offer custom-labeled wines in Greater Des Moines, the companies announced. Custom labels are popular with wine connoisseurs for special events such as weddings and anniversaries and with businesses that want to feature their own brand for special occasions such as customer appreciation events and holidays, Stone Cliff’s owner, Bob Smith, said in a release. Corporate customers are a growing part of Heart of America’s business, and the new offering provides an opportunity for clients to stand out from the crowd, Heart of America owner Kelly Sharp said.