Is it better to have a planter box with a liner or without?

You’re standing at the garden center, eyeing that beautiful cedar planter box. Then comes the question that splits every gardener’s soul: “Should I get a liner?”

As a planter box who has housed tomatoes, petunias, and a few ambitious weeds, let me tell you—I have opinions. And I’m not afraid to share them.

First, let’s talk about me, the wooden planter. I’m handsome, I know. But wood—especially untreated wood like cedar or redwood—has a soft spot for rot. If you fill me with moist soil season after season, my walls will eventually groan and weaken. A liner is like giving me a raincoat. It protects my timber from constant dampness, slows down decay, and keeps me looking young. Without a liner, I’ll start to decompose from the inside out. It’s not pretty.

But wait—there’s more to this dance. A liner also acts as a moisture regulator. When you add a breathable liner (like landscape fabric with holes), it holds soil in place while letting water drain. That means your plants’ roots get a consistent drink, but they don’t drown. Without a liner, drainage is faster—sometimes too fast. Soil can wash out through gaps, and those happy little earthworms might escape. Plus, a liner traps warmth in colder months, giving your seedlings a cozy blanket.

However—and this is a big however—going liner-free has its own charm. Without a liner, I breathe naturally. Air circulates through my cracks, preventing condensation and mold. I also dry out faster after heavy rain, which some plants adore. And let’s be honest: liners can trap moisture against wood at the bottom, causing exactly the rot you tried to avoid. Cheap plastic liners? They’re the villains of the story—they turn your garden into a swamp.

So what’s the verdict? For long-term health and structure, a high-quality, breathable liner wins. It’s an investment in both your plants and my wood’s lifespan. But if you live in a rainy climate or use a galvanized metal planter (I’m jealous of those non-porous bodies), you might thrive without one.

Ultimately, I’ll say this: Treat me like a good friend. Give me a liner if you want me to stick around for years. Skip it if you prioritize rapid drainage and don’t mind replacing me sooner. Either way, fill me with good soil and sun-loving plants—and if you add a liner, make sure it’s stapled properly. I hate sagging.