The best rectangular plastic planter tray depends on whether you need a flat for growing or a saucer for catching water. Yield Lab’s 10-by-20-inch pack is suited to propagation, while Gardzen’s larger trays offer more growing area. For narrow windowsills, the 15.7-by-6-inch white trays fit a long, slim footprint; the 6-by-11-inch saucers are better for catching drips beneath pots. Compare dimensions, pack count, and drainage before choosing.
| Product | Best For | Size or Pack | Drain Holes |
|---|---|---|---|
| Yield Lab Propagation Trays | Seed starting and propagation | 10 trays, 10 x 20 inches | No |
| Gardzen Seed Trays | Roomier growing setups | 10 trays, 17.3 x 13 inches | No |
| Black Plant Saucers | Small pots and window boxes | 6 trays, 6 x 11 inches | No |
| White Plant Saucers | Narrow windowsills | 20 trays, 15.7 x 6 inches | Not specified |
| VUWEZ Plant Saucers | Pot drip-catching | 2 trays, 6 x 11 inches | Not specified |
Yield Lab 10 x 20-Inch Propagation Trays
These black trays come in a 10-pack and measure 10 by 20 inches. They have no drain holes and are described as reusable, heavy-duty plastic trays for seed starting, cuttings, microgreens, soil, and hydroponic growing. Their flat design gives growers a simple base for organizing propagation work.
Best for: Gardeners who want multiple standard-size flats for starting seeds or growing microgreens. Choose this set if a no-hole tray suits your watering setup. Because the trays do not drain, excess water will not escape through the base; manage watering accordingly.
Gardzen Large Seed Trays
Gardzen’s 10-pack measures 17.3 by 13 inches per tray. The no-hole trays are listed for seed starting, microgreens, indoor gardening, and greenhouse nurseries. Compared with the 10-by-20-inch flats above, these trays are wider and shorter, so check the available shelf, bench, or greenhouse space before buying.
Best for: Growers who want a larger footprint for indoor or nursery projects and need several reusable trays. Avoid this option if your setup only accommodates a narrower 10-by-20-inch flat. No drain holes are specified in the product name, so plan for water to remain in the tray.
Black 6 x 11-Inch Plant Saucers
This six-pack of 6-by-11-inch black trays is described as a no-hole water catcher for flower pots, windowsills, and window boxes. The product name also identifies uses as a seed tray and nursery plant tray. Unlike propagation flats, these are compact saucers designed to sit beneath pots or containers.
Best for: Plant owners who need several small trays to catch drips indoors or outdoors. Choose this set if the pot or window-box base fits the tray dimensions. The listed size may be too small for larger containers, so measure the pot’s footprint first.
White 15.7 x 6-Inch Window Trays
This set includes 20 white plastic trays measuring 15.7 by 6 inches, or 40 by 15 centimeters. The listing describes them as rectangular plant saucers for windowsills, flower planters, and garden use. Their long, narrow shape distinguishes them from the shorter 6-by-11-inch options.
Best for: Buyers who want a high-count set of slim trays for a row of windowsill planters. Select these when the extended length is useful; avoid choosing by appearance alone if the width or inner dimensions are critical, since those measurements are not provided.
VUWEZ 6 x 11-Inch Plant Saucers
VUWEZ supplies two rectangular saucers with an outer size of 6 by 11 inches, an inner size of 9.7 by 4.7 inches, and a height of 1.1 inches. The listing says the trays are made from thickened polypropylene and are suitable for indoor and outdoor use. It specifies pots with a bottom diameter under 10 inches and states a load capacity of up to 100 pounds.
Best for: Buyers who need a pair of compact pot drip trays and want inner dimensions and height stated. Check the pot base against the listed inner size before purchasing. The two-piece pack is smaller than the six-pack alternative.
Buying Guide: How to Choose a Rectangular Plastic Planter Tray
Do you need a growing flat or a saucer?
Propagation trays provide a flat surface for seeds, microgreens, or cuttings. Plant saucers sit beneath pots to catch water. Some listings describe dual uses, but a tray’s dimensions and design should match the task. Choose a flat when you need space to arrange growing material; choose a saucer when your main goal is containing drainage from a pot.
Should the tray have drainage holes?
Check this detail before buying. Yield Lab and Gardzen are listed as having no drain holes, and the six-pack black saucers are also explicitly described as hole-free. A no-hole tray can retain water, so it is not interchangeable with a draining container. The other saucer listings do not specify holes in the provided product details.
How do dimensions and pack count affect the choice?
Measure the shelf, windowsill, greenhouse bench, or pot base before ordering. The 10-by-20-inch flats suit a different footprint than the wider 17.3-by-13-inch trays. For pot saucers, compare the inner dimensions—not only the outer size—to the bottom of the planter. Larger pack counts are useful when setting up multiple stations, but require more storage space.
What material details matter?
Look for descriptions that match the intended reuse and handling. Yield Lab and Gardzen are described as reusable; VUWEZ specifies polypropylene and provides a stated capacity. Do not assume all trays have the same thickness or load limit. If you plan to move trays while full, product details should explicitly support the weight and handling conditions you expect.
Frequently Asked Questions
Are rectangular plastic planter trays suitable for seed starting?
Yes. The Yield Lab and Gardzen products are described for seed starting or propagation. Check dimensions and drainage details to confirm the tray suits your setup.
Can a no-hole tray catch water under a pot?
Yes, a no-hole tray can retain runoff, but it may also hold excess water. Monitor collected water and avoid treating a saucer as a draining pot.
Which listed tray is the narrowest?
The white trays measure 15.7 by 6 inches, making them longer and narrower than the other listed rectangular options.
What should I measure before buying a plant saucer?
Measure the pot’s bottom footprint and compare it with the tray’s inner dimensions. Also check the outer dimensions against the available windowsill or shelf space.
Are all five products intended for the same use?
No. Some are seed or propagation flats, while others are described primarily as plant saucers for catching drips. Choose based on whether you need a growing surface or a pot base.