150PCS Seed Starter Plugs, Grow Sponges Compatible with Hydroponic Trays — Open-Box, 5% Off

Perfect Fit for Nursery Trays: Designed to fit most standard 105 and 128 cell nursery trays, these expandable seed starter plugs fit securely without trimming or extra adjustment. Simply add water to expand the grow sponges and begin seed starting, seedling growth, and indoor gardening projects with less mess and easier setup for greenhouse or hydroponic growing. Stable Support for Seedlings: After soaking, each grow sponge expands quickly to provide stable germination and root support for seedlings, herbs, vegetables, flowers, and young plants. The soft yet supportive structure helps keep delicate seedlings upright while allowing roots to grow freely through the breathable grow media. Breathable Moisture Balance: Made with porous, water-retentive material, these seed starter plugs help maintain a healthy balance of airflow and moisture around delicate roots. The breathable structure helps reduce excess moisture buildup while supporting strong germination, healthy root development, hydroponic growing, and indoor seed starting. Easy Insert Slit Design: Each grow sponge features a convenient pre-cut slit design that makes it easier to insert seedlings, sprouts, or young plant stems without damaging delicate tissue. The flexible material gently holds plants in place while supporting healthy early root growth and easier transplanting with less root disturbance. Ideal for Seed Starting: Ideal for seed starting, hydroponic growing, greenhouse gardening, nursery trays, herbs, lettuce, vegetables, flowers, and everyday indoor gardening projects. These starter plugs support healthy germination, early root growth, and easier transplanting for a wide variety of plants.

Expandable Plant Starter Plugs for Seed Starting & Propagation

These expandable plant starter plugs are designed for seed starting, plant propagation, hydroponics, and greenhouse growing. Compatible with most standard 105 and 128 cell nursery trays, the grow sponges expand quickly after soaking to provide stable support for seedlings, plant cuttings, herbs, vegetables, and flowers.

Product Features

Expandable & Easy to Use

Simply soak the starter plugs in water and allow them to fully expand before use. The soft grow media creates a stable rooting environment while helping keep delicate seedlings and cuttings securely in place.

Breathable Grow Media

The porous structure helps maintain balanced airflow and moisture around developing roots. Helps support healthy germination, root growth, and easier transplanting for both hydroponic and soil growing systems.

Pre-Cut Slit Design

Each propagation plug features a convenient center slit for easy insertion of plant cuttings, stems, or seedlings without damaging tender plant tissue. Flexible material gently holds plants upright during early growth stages.

Less Mess & Easy Transplanting

The integrated root structure helps reduce root disturbance during transplanting. Suitable for transferring seedlings into soil, hydroponic systems, larger containers, or outdoor garden beds.

Suitable For

Seed Starting

Plant Propagation

Hydroponic Growing

Greenhouse Growing

Nursery Trays

Vegetable Seedlings

Herbs & Lettuce

Flower Seedlings

Indoor & Outdoor Gardening

Product Information

Quantity: 150PCS

Compatible Tray Sizes: 105 Cell & 128 Cell Nursery Trays

Design: Expandable Propagation Plugs with Pre-Cut Slit

Material Type: Breathable Grow Media

Application: Seed Starting, Rooting Cuttings, Hydroponics & Gardening