Four swivel casters for easy transport and sun tracking that works great on patios, decks, apartment platforms, or even fire escapes. Grow your favorites, or try something new with a Trellis Tower! Tomatoes, peppers, strawberries, and other vine or crawling plants grow vertically to save time and space. The included sides and trellis system lock together without tools in minutes. The Trellis Tower holds over 0.5 cubic feet (15 liters) of material in the box. The side panels feature a unique wicker or wood pattern on either side to customize the appearance.