Heywood-Washington house information board Charleston Image by denisbin Heywood Washington House in Charleston South Carolina. South Carolina up to the War of Independence Continued. Apart from rice the other profitable crop grown in the lowlands and swamps of Sth Carolina was indigo. The blue flowering Indigofera tinctoria, a member of the pea family provided dye for the … [Read more...] about Heywood-Washington house information board Charleston