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Grow1 X-Deep Premium Seedling Plug Tray 50-Cell (USA Made) - 10" x 20"

  • 50 individual cells with a massive 4.5-inch depth for maximum root volume
  • Heavy-duty pliable plastic allows for seedling extraction without the tray cracking or snapping
  • Fits all standard 10x20 propagation flats to integrate with your existing gear
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THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are starting crops with deep taproots because standard trays cause root-binding before you are ready to transplant.
  • You are switching to heavy duty inserts because the weight of deep wet media keeps cracking your cheaper brittle trays.

What We Found

  • Most trays snap if you flex them to pop a plug out, but this USA-made plastic is actually designed to bend.
  • These cells are deep enough that you can wait much longer to transplant without the roots getting tangled and messy.

What Users Say

  • Growers who moved to these trays say their plants established much faster once they finally hit the ground.
  • Users say the extra depth means they can skip a transplant step entirely, saving them hours of labor each season.

Grow1 USA Premium X-Deep 50 Cell Seedling Plug Tray (10" x 20")

When standard propagation inserts aren't deep enough for your high-value crops, the Grow1 USA Premium X-Deep 50 Cell Seedling Plug Tray steps in. Proudly manufactured in the USA, this tray is built with a heavy-duty, pliable plastic that provides significantly more durability than standard seedling trays. It is engineered to withstand the weight of deep media and the pressure of large root masses without cracking or buckling.

The standout feature of this tray is its massive 4.5-inch depth. While standard trays often restrict root growth, the X-Deep cells provide nearly double the vertical space of traditional inserts. This makes it the ultimate choice for starting indoor seeds like peppers, tomatoes, and woody perennials that require an extensive root system before transplanting. By allowing the taproot to grow deeper, you ensure a more resilient plant with less transplant shock.

Sized to fit into a standard 10" x 20" propagation tray, this 50-cell insert is designed for reuse across multiple seasons. Each cell features integrated drainage holes to ensure proper moisture management and prevent the anaerobic conditions that lead to root rot. For growers needing higher density in the same footprint, we also offer the X-Deep 72-cell seedling plug tray as a professional-grade alternative.

Features

📐
Massive 4.5" Depth

Extra-deep cells allow for incredible root establishment, reducing the risk of plants becoming root-bound too early.

🇺🇸
USA-Made Quality

Built in the USA from premium, pliable plastic that holds its shape under the weight of deep soil and heavy waterings.

🏗️
Crack-Resistant Build

Engineered to flex during seedling extraction without snapping, ensuring this tray lasts for many growing cycles.

💧
Optimal Drainage

Each cell includes precision drainage holes to flush excess water and keep the root zone oxygenated and healthy.

Specifications

Specification Value
Dimensions 20" x 10" x 4.5"
Cell Count 50
Cell Depth 4.5" in
Cell Shape Square
Material USA-Made Premium Pliable Plastic
Drainage Holes Yes (Per Cell)
Origin Made in the USA

FAQ

What are the benefits of an "X-Deep" tray? +

The 4.5" depth is designed for plants that need to develop a long taproot or a massive root ball before being transplanted. This extra space prevents the roots from circling the bottom too quickly and allows for more vigorous growth.

Which plants benefit most from 4.5" deep cells? +

Tomatoes, peppers, and various tree or shrub seedlings are perfect for this tray. It is also excellent for high-value ornamental crops that you want to keep in a nursery setting for a longer duration.

Does this tray fit into a standard 10x20 flat? +

Yes, the top dimensions follow the industry standard 10" x 20" footprint, allowing it to sit perfectly inside a standard propagation tray. However, because these cells are 4.5" deep, ensure your workspace or shelving has enough vertical clearance to accommodate the added height.

How does the USA-made plastic compare to standard trays? +

These trays are significantly sturdier and use more material than cheap alternatives. They are pliable rather than brittle, meaning they can flex during plant removal without snapping at the corners.

Can I use a humidity dome with this tray? +

Yes, standard 10x20 domes will fit onto the rim of this tray. Keep in mind that with 4.5" cells, your seedlings will be sitting much lower in the tray, which can help maintain high humidity near the soil surface.

How do I clean this tray for reuse? +

The durable plastic can be washed with warm soapy water and sanitized with a diluted bleach or hydrogen peroxide solution. Its crack-resistant nature allows for thorough cleaning without damaging the cells.

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Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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