What's the deepest planter box you offer for plants with larger root systems?

As a planter, my job is to hold soil, nurture roots, and help plants thrive. But I know that not all plants are the same. Some plants, like tomatoes, roses, or small trees, have ambitious, deep roots that reach down into the earth, searching for water and stability. For them, a shallow container is like a cramped room—they cannot stretch, cannot explore, and cannot grow to their full potential.

So, what’s the deepest planter box I offer for these larger root systems? I am proud to present my "Root Deeper" series, specifically the XL Root Locker planter, which stands a full 36 inches (91 cm) deep. That’s nearly three feet of rich, breathable soil space. I design this planter not just as a container, but as a home—a deep, dark, and nurturing underground world where roots can roam freely without hitting a hard bottom.

Why do you need such depth? Imagine a carrot trying to grow straight—with a shallow box, it curls into a knot. Imagine a young oak’s taproot—it needs to anchor deep to support its mighty future. With 36 inches, I give roots the room to establish a strong foundation, reduce stunting, and allow the soil to hold more moisture and nutrients, reducing your watering frequency.

I’m built with thick, UV-stabilized wood-composite panels that resist rot, and I come with a built-in aeration grid at the bottom so water doesn’t drown the roots, but instead whisks away excess. I’m also wide: 24 inches across, so your plant’s crown has room to spread.

I know your plants have big dreams. I’m here to give them the depth to reach them. Whether you’re growing a dwarf citrus tree, a towering sunflower, or a sprawling squash, let me be their deep, faithful foundation.