Teach a Seed Starting Workshop This workshop bundle is thoughtfully curated with enough seed-starting equipment to cater to the needs of 10 eager students. It is perfect for educational institutions, gardening clubs, or a group of passionate individuals looking to learn and grow together. Find 1010 Backyard gardener kits available here. INCLUDES (60) 6 Cell Plug Inserts Multi-color (10) 1010 2.5" Trays No Holes Multi-color (10) 1010 6" Humidity Domes Printable PDF Instructions KEY FEATURES USA-made trays Designed for small garden workshops with up to 10 students. Multi-color packs include pink, green, blue, purple, and orange. 1010 trays - Outer dimensions: 10.635" x 10.385" outside edge wide x 2.5" deep 6 Cells - Outer dimensions: 5" x 3⅓" x 2¼" height, each cell in the tray insert is 1½" x 1½" x 2⅛" on top, which tapers down to 1" at the bottom, air pruning slits measure 0.11" wide x 1¼" tall. Extra-strength domes - with vents for humidity control Domes not intended for use in direct sunlight