These days, while we’re carrying around thousands of songs on an iPod, or reading hundreds of titles on a Kindle, why are we still gardening the old-fashioned way? Join urban greenscaping pro Bob Hyland and urban farmer Gwenn Hill on Tuesday in the basement at Sycamore for Non-Dirt Talk: Growing Without Dirt: Urban Greenscaping and Hydroponics, presented by Cantaloupe Alone and Prospect Farm. Not only is their method more modern, it’s better suited to this concrete-covered city. Learn how to grow fresh food in your apartment without all of the dirt, or a backyard to plant in, using technology like Hyland’s Sub-Irrigated Planters. Prospect Farm’s Meera Bhat will host the discussion, and admission is free.