I need a very shallow but wide planter box, is that a standard size?

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SEO description:Looking for a very shallow but wide planter box? It’s not a standard size, but here’s how to find or build one that suits your succulents, ground covers, or tabletop garden perfectly.

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Article title:Is a Very Shallow but Wide Planter Box a Standard Size? Let’s Dig In

Article content:

I’ll be honest with you: when you walk into a typical garden center or scroll through online stores, you’ll mostly see planters that are either tall and narrow (like a classic urn) or square and moderately deep. A very shallow but wide planter? That’s not a standard size. By “standard,” I mean something you can grab off the shelf without special ordering. Most mass-produced planters follow depth ratios—their depth is usually at least half of their width or more, because plants need soil space for roots.

But don’t let that discourage you. I know exactly what you’re going for—maybe you want to create a lush carpet of succulents, a mini ground-cover display, or a low-profile centerpiece for a tabletop. The good news? Shallow-wide planters do exist; they’re just not “one-size-fits-all.” You’ll find them more often in categories like “trough planters,” “window box planters,” or “bonsai trays.” These tend to have depths of 4 to 6 inches, with widths stretching 24 inches or more.

If you’re flexible, you can also look for “saucer-style” planters, which are literally shallow dishes. They’re great for shallow-rooted plants like sedums, sempervivums, or small ferns. However, they often lack drainage holes, so you’ll need to drill your own or use a layer of gravel wisely.

Still not finding the exact size? Here’s a secret: a shallow-wide planter is one of the easiest things to build yourself. You don’t need advanced skills—just a few cedar boards, some screws, and a liner. For example, a 36-inch long, 12-inch wide, and 5-inch deep box is trivial to assemble. Then you can customize the width and length to perfectly fit that bare spot on your deck or the center of your outdoor table.

So no, it’s not a standard size. But that’s exactly why it’s special. You can either hunt for a purpose-made trough planter, or—if you’re like me—embrace a quick DIY project. Your plants will thank you for giving them room to spread low and wide.

Now, go find your tray, build your box, or at least dream about a shallow horizon of green. I’ll be here, ready to root for you.