1020 Plastic Planting Trays are perfect for seed germination, seedling, seed reproduction, hydroponics, and plant germination. They are widely used in greenhouses, agriculture and horticulture. Designed with no drainage holes at the bottom, these trays will retain a lot of water and nutrients for plant growth. The trays are made of durable plastic, are easy to clean and can be reused in multiple seasons. The perfect size for seed starters, vegetables, wheatgrass or other plant seedlings.