Skip to main content

Send Us a Message

Search

Grow1 Extreme Black Propagation Tray No Drain Holes - 10" x 20"

  • Supports heavy payloads of wet media with 3 times the thickness of standard trays
  • Made in the USA from food safe High Density Polyethylene plastic
  • Watertight 10 by 20 inch footprint fits most standard 72 cell seedling inserts
  • View More Details

Earn 10 points for shopping and get $0.10 off your next order. Join Harvest Club for free.

Questions? Talk to a specialist. Mon–Fri, 9am–5pm PST
Free Shipping On Most Items* To the lower 48
Transparent Pricing Backed w/ price match guarantee
Secure Checkout SSL encrypted payments

Send Us a Message

Ask Sage about this product
VOLUME PRICING

Commercial & Bulk Purchasing

We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.

Commercial Inquiry

Contact Information
THROUGH THE Cultivator's LENS Hands-On Evaluation

Who This Is For

  • You are switching to bottom-watering because you are tired of thin trays cracking and leaking onto your shelves.
  • You are upgrading to heavy-duty trays because your current ones buckle under the weight of wet rockwool or dense soil.

What We Found

  • The first thing you notice is the weight since these feel more like a permanent tool than a disposable liner
  • Those deep channels at the base actually keep your pots elevated enough to prevent roots from sitting in stagnant water
  • We noticed you can carry these one handed even when fully loaded without that terrifying middle sag

What Users Say

  • Growers using bottom watering say the watertight base holds enough volume to keep plants hydrated without seepage
  • Buyers who moved to these say they haven't had to replace a single cracked tray in over three years of heavy use

Grow1 Extreme Black Propagation Tray No Drain Holes - 10" x 20"

When "standard" and "heavy-duty" aren't enough, there is the Grow1 EXTREME Propagation Tray. Engineered to be the last tray you will ever need to purchase, the EXTREME series is a staggering three times thicker than any other standard propagation tray on the market. Crafted in the USA from premium High-Density Polyethylene (HDPE), this tray is designed to withstand industrial-scale use, heavy payloads, and years of seasonal transitions without warping, cracking, or failing. For growers who prefer a lighter color for heat reflection, we also offer the Extreme White version.

This "No Holes" version is a completely watertight fortress. It is the gold standard for growers who utilize bottom-watering techniques or require a leak-proof reservoir for microgreens, fodder, or wheatgrass. Its immense structural integrity means you can lift a fully saturated tray of soil or a complete set of stone-heavy rockwool cubes with a single hand without the tray buckling or spilling. It also serves as an indestructible master tray to catch runoff from 72-cell seedling trays.

The base of the EXTREME tray features deep, reinforced channels that elevate your nursery pots or insert trays. This design ensures that even in a watertight environment, oxygen can still circulate around the base of your media, promoting healthy root pruning and preventing the anaerobic conditions that lead to root rot. If you are tired of replacing flimsy trays every season, it's time to upgrade to EXTREME durability.

Features

🏗️
3X Thickness

Tripled wall thickness compared to standard trays, making this virtually indestructible under normal growing conditions.

🇺🇸
Premium HDPE Construction

Made in the USA from High-Density Polyethylene, a food-safe plastic known for its extreme impact resistance and longevity.

💧
100% Watertight

No drainage holes make this the ultimate reservoir for bottom-watering or protecting your grow area from runoff leaks.

🌬️
Deep Base Channels

Heavy-duty ridges elevate your plants to maximize air circulation beneath the root zone, preventing stagnant moisture buildup.

Specifications

Specification Value
Inner Dimensions 20 3/8" x 10 1/8" x 2.5"
Outer Dimensions 21 3/8" x 11 1/8" x 2.5"
Material High-Density Polyethylene (HDPE)
Durability Grade EXTREME (3x Standard Thickness)
Drainage None (Watertight)
Case Quantity 50 Trays
Origin Made in the USA

FAQ

What makes the EXTREME tray different from "Double Thick" trays?+

While double-thick propagation trays are a significant upgrade over standard flats, the EXTREME tray is 300% thicker than standard nursery trays. It uses HDPE plastic, which is much more rigid and impact-resistant, making it nearly impossible to twist, bend, or crack by hand.

Will standard humidity domes still fit this tray?+

Yes. Although the walls are thicker and the outer dimensions are slightly wider (21 3/8"), the inner dimensions are designed to accommodate standard 1020 seedling inserts and the lip is engineered to seal with standard Grow1 humidity domes.

Is HDPE plastic safe for organic growing?+

Absolutely. HDPE is a non-leaching, BPA-free, food-safe plastic. It is highly resistant to chemicals and fertilizers, making it the preferred choice for organic vegetable and microgreen production.

Can I use this tray for heavy applications like fodder or wheatgrass?+

This is the ideal tray for those applications. Fodder and wheatgrass can become incredibly heavy when saturated; standard trays will buckle under that weight, but the EXTREME tray remains rigid, allowing for easy transport from rack to rack.

How long can I expect this tray to last?+

With proper care (rinsing and sanitizing between uses), these trays are designed to last for years, if not decades. They are built to survive the UV exposure of greenhouses and the physical demands of commercial propagation.

Happy To Help

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

Why Trimleaf

Equipping home growers, craft producers, and commercial operations across North America since 2016.

10+
Years of Specialist Knowledge
4.8★
1949+ Verified Reviews
50,000+
Growers Served
120+
Top Equipment Brands in Stock