Green designer Joshua Foss of HGTV's Design Star 2 is among the featured guest experts at the Tampa/St. Petersburg Home & Patio Show. Other enticements include how-to seminars, giveaways and hundreds of home and garden exhibitors, with "Green Product" signs highlighting a variety of eco-friendly, sustainable goods and services, and a contest where you can vote for your favorite. 2-8 p.m. Fri., 10 a.m.-8 p.m. Sat., 11 a.m.-6 p.m. Sun., April 18-20, Tampa Convention Center, $9 adults (free for children 12 and under), floridahomeshows.com.