Tierra Garden 50-9000 Haxnicks Deep Rootrainers Seed and Cutting Propagation Kit A must-have for seeds, seedlings, and cuttings! Produce deeper, faster, straighter fibrous roots through 'air-pruning' resulting in superior plants with NO root disturbance or worry of potbound. Especially good for all beans, sweet peas, corn, strawberries, tomatoes, and deep-rooted flowers, but will work with all seeds, seedlings, and cuttings The reusable cells quickly snap together and very tightly fit into the holding tray; cells open like a book for easy transplanting without root disturbance Use the included holding tray and propagating lid to create a mini-greenhouse Dimensions: 14.6"W x 8.7"D x 6.7"H; 32 Cells; 5" Deep Cells