6 Cell Seed Starting Inserts

About Our 6-Cell Inserts 

Start healthy seedlings with durable 6-cell propagation inserts designed for growers who value reliability and reuse. Each insert features six individual planting cells sized for germinating seeds, rooting cuttings, and developing strong transplants before moving them to larger containers or the garden.

Built from sturdy BPA-free polypropylene, these inserts are intended for repeated growing cycles and can withstand regular greenhouse, nursery, and garden use. Their compact footprint allows twelve inserts to fit inside a standard 1020 flat, providing an efficient propagation system for both small and large growing operations.

The open-bottom design promotes excellent drainage while encouraging a dense, healthy root structure. Vertical air-pruning slots help guide root development and reduce circling, resulting in more vigorous transplants and easier establishment after planting.

Product Highlights

• Durable polypropylene construction for long service life

• BPA-free, food-safe #5 plastic

• Manufactured in the United States

• Compatible with standard 1020 nursery trays

• Six growing cells per insert

• Designed for seed starting, cloning, and transplant production

• Large drainage openings for improved moisture management

• Air-pruning slots support healthier root formation

• Reusable season after season

Specifications

Insert Dimensions

• Length: 5 inches

• Width: 3⅓ inches

• Height: 2¼ inches

Cell Dimensions

• Top opening: 1½" × 1½"

• Bottom width: approximately 1"

• Depth: 2⅛"

Tray Capacity

• Twelve inserts fit a standard 1020 propagation tray