The only tray style CowPot is self-supporting. Scored for improved ease of separating cells at time of planting. Great for veggies with a quick turnaround prior to transplanting like cucumbers, squash and pumpkins. Also well suited for cold season crops that can go out to the garden in early spring: kale, spinach, lettuces, etc. as well as flowering annuals. Suggested shelf life is approximately 6 weeks after initial planting. At transplant time, plant the whole pot, no need to crush or tear as the roots will grow through the pot.