Black PS Plastic Seedling Trays - 21-288 Cells 1

Black PS Plastic Seedling Trays - 21-288 Cells 2

Black PS Plastic Seedling Trays - 21-288 Cells 3

Black PS Plastic Seedling Trays - 21-288 Cells 4

Black PS Plastic Seedling Trays - 21-288 Cells 5

Black PS Plastic Seedling Trays - 21-288 Cells 6

Black PS Plastic Seedling Trays - 21-288 Cells

Place of Origin:

China

Samples:

$5.0/piece | Min. order : 1 piece

Shipping:

Support Sea freight

Payments:

L/C,D/A,D/P,T/T,Western Union,MoneyGram,OA

Lead Time:

1-100000(pieces):33(days),>100000(pieces):To be negotiated(days)

model number:

seedling tray

brand name:

hyrt

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Volume

0.7 Gallons(2.65L)

TRAY

Include

plastic type

Other

Name

Seedling Trays

Keywords

seed

Product Name

Garden Seedling Nursery Trays

Packing

Carton Box

Color

Black

MOQ

1carton

Feature

Eco-Friendly, Durable

Usage

growing seed

Material

Plastic

Size

21 28 32 50 72 105 128 200 288

Application

Gardening, Plants, Nursery, PLANTER, plant seedlings, agriculture greenhouse, Vegetables

place of origin

Shandong, China

type

Nursery Pots

Durable Stackable Uniform Cells

Black PS plastic seedling trays (21–288 cells) deliver uniform cell shape, durable PS construction and reliable drainage for faster, healthier germination and easier transplanting. Their stackable, space-saving style and secure carton packaging protect tray quality in transit while offering multiple cell sizes to match different crops and workflows. Compatible with greenhouse racks and Other Tools, these trays simplify propagation, reduce waste and accelerate nursery production.

Here are six four-word subtitle options:

Made from durable black PS plastic, these seedling trays are available in configurations from 21 to 288 cells and feature a stackable, lightweight design with tapered cells and integrated drainage to simplify transplanting. They offer a cost-effective, space-saving solution for seed starting, germination and early growth, improving root development while remaining easy to clean and sterilize for repeated use. Rigid walls, reinforced ribbing and uniform cell geometry ensure consistent moisture retention and handling, and the trays pair seamlessly with Other Tools like propagation mats, greenhouse benches and watering systems to streamline nursery and home-garden production.

Black PS Seedling Trays

Black PS plastic seedling trays (21–288 cells) are durable, lightweight polystyrene trays designed for efficient seedling propagation in greenhouses, gardens and nurseries, available in multiple cell configurations to suit different crop needs. Made for all-season use and shipped in sturdy carton packaging from HYRT in Shandong, China, these trays pair well with micro-irrigation and sprinkler systems and integrate smoothly into agricultural and landscape production lines. Ideal for growers seeking reliable nursery supplies and Other Tools for planting and irrigation, they offer easy handling, compatibility with standard tray racks, and convenient bulk ordering.

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Durable, Efficient, Space-Saving Propagation

Crafted by a trusted horticultural brand using durable PS plastic and precision molding, the Black PS Plastic Seedling Trays (21-288 Cells) are engineered for consistent cell size, reliable drainage and long-lasting reuse. Designed for efficient germination and transplanting, the trays support uniform root development, stack compactly for space-saving and pair seamlessly with Other Tools like humidity domes and bottom heat mats for professional propagation. Key highlights include lightweight yet sturdy construction, UV-resistant finish, clear cell demarcations for labeling, and compatibility with automated seeding systems, offering an economical, eco-conscious solution for nurseries and home gardeners.

Material introduction

Made from black PS plastic, these 21–288 cell seedling trays offer a rigid yet lightweight construction that resists warping and supports uniform root development. The polystyrene material provides good dimensional stability and easy cleaning while allowing efficient water retention and drainage when used with standard greenhouse irrigation and Other Tools. Recyclable and suitable for repeated seasonal use, the trays balance cost-effectiveness with durability for propagation tasks.

◎ Black PS Classic Seedling Tray

◎ Black PS Insulating Propagation Tray

◎ Black PS Budget Reusable Tray

FAQ

What are Black PS Plastic Seedling Trays - 21-288 cells and what does "21-288 cells" mean?

These are rigid black polystyrene (PS) trays designed for propagating seedlings and cuttings. "21-288 cells" indicates that the product line includes tray configurations with anywhere from 21 relatively large cells up to 288 small plug cells; higher cell counts mean smaller individual cells for smaller seeds or denser propagation, while lower counts provide larger cells for bigger seedlings and longer nursery growth.

Which plants and propagation methods work best in these trays?

They’re suitable for most vegetables, herbs, ornamentals and nursery crops. Use high-cell-count versions (e.g., 128–288 cells) for small-seeded crops and quick-turn plug production (lettuce, annuals, herbs), and low-cell-count trays (20–50 cells) for larger seedlings and slow-growing crops (tomato, pepper, nursery shrubs) or for rooting cuttings. They also work well with seed-starting mixes, peat or coco pellets and plug systems.

How do I use these trays for seed starting—what are the basic steps?

Fill each cell with a light seed-starting medium, firm gently, sow seeds at the recommended depth, and water thoroughly from the top or by bottom-watering. Keep trays under humidity domes or cover until germination if needed, place under appropriate light and temperature conditions, and thin or transplant once roots fill a cell. Harden off seedlings gradually before moving them outdoors.

Can these trays be reused and how should I clean or disinfect them between crops?

Yes, they can be reused if not cracked or warped. Remove soil and debris, wash with warm water and mild detergent, then disinfect with a diluted bleach solution (about 1 part household bleach to 9 parts water) or a horticultural disinfectant; soak briefly, rinse thoroughly, and air dry. Inspect for damage and replace trays with broken cells to avoid root problems.

Are these trays compatible with greenhouse systems and propagation accessories?

Yes—they’re commonly used on greenhouse benches and in nursery setups and work with heat mats, propagation domes, irrigation/drip systems, and many tray flats or carrying racks. Before purchasing for automated equipment, check exact tray outer dimensions and cell layout to ensure compatibility with seeding machines or insert systems.

What limitations or precautions should I know when using PS seedling trays?

Avoid prolonged direct sunlight or extreme heat (which can warp PS), don’t expose them to strong solvents or very hot wash cycles, and ensure adequate drainage to prevent waterlogging. Because cell sizes vary, choose the appropriate cell count for crop root space needs to prevent stunting or transplant shock. For disposal, check local recycling rules for polystyrene—some areas accept solid PS while others do not.

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No. 2, Wuhua Street, Fengcheng Industrial Park, Laiwu District, Jinan City, jinan, Shandong, China