Reusable Seed Starting Inserts | Made in the USA

Durable, deep plug tray inserts designed for seedlings that need more room to grow.

These 4-Cell Deep Plug Tray Inserts are ideal for starting and up-potting crops like tomatoes and peppers that benefit from deeper root space. Made in the USA from food-safe, heavy-duty polypropylene, these inserts are built for repeated use across many growing seasons.

Each insert features air-pruning slits to encourage strong, healthy root development and an extra-large drainage hole for easy seedling removal.

Quick Highlights

• Deep 4-cell design for larger seedlings

• Encourages healthy root growth with air-pruning slits

• Extra-large drainage hole for easy transplanting

• BPA-free, food-safe polypropylene

• Built for reuse season after season

• Made in the USA

• Color options for easy seedling organization

Why Gardeners Love These Plug Inserts

• Ideal for up-potting tomatoes, peppers, and similar crops

• Strong root systems without circling or binding

• Easy to remove seedlings with minimal root disturbance

• Durable construction that outlasts flimsy trays

• Makes organizing and labeling seedlings simple

Product Details

• Insert size: 5 1/4″ x 5 1/4″ x 4″ tall
• Cell size: 2 3/8″ top width, tapers to 1 1/4″ bottom
• Drainage hole: 3/4″ diameter
• Air-pruning slits: 2 1/2″ long, 1/8″ wide
• Soil capacity: 1 cup per cell
• Soil usage: 1 quart per 4-cell insert
• Material: FDA prime-grade polypropylene (#5, BPA-free)

Tray Compatibility

• Fits 8 inserts per 1020 tray

• Fits 4 inserts per 1010 tray

• Not compatible with 1020 or 1010 humidity domes due to snug fit

Use & Care

• Ideal for seed starting and up-potting

• Clean between uses for best results

• Store out of prolonged direct sunlight when not in use

• Designed to last at least two growing seasons with proper care

A Strong Foundation for Healthy Seedlings

These deep plug tray inserts give seedlings the space and airflow they need to develop strong rootsmaking transplanting easier and plants healthier from the start.