The String Trellis System: A Clean and Efficient Way to Grow Tomatoes Vertically If you’re serious about growing healthy, productive tomatoes, the vertical string trellis system shown in the image above is one of the most effective methods you can use. Clean, simple, and highly scalable, this setup is commonly used in professional market gardens—and it works just as well in backyard raised beds. This design keeps plants upright, organized, and incredibly productive. What You’re Looking At The im