Plant Pot with Drainage Holes | Why You Need Them

A plant pot with drainage holes lets excess water escape through the bottom, preventing the waterlogged soil that causes root rot and suffocates roots.

The fix isn’t a fancy watering schedule — it’s the pot. A container with drainage holes gives that extra water somewhere to go instead of pooling around the roots. Whether you’re working with ceramic, terracotta, or plastic, here’s what matters about that hole in the bottom and how to get the setup right.

What Makes a Drainage Hole Pot Different

A pot with drainage holes does one thing a solid-bottom pot can’t: it creates an escape route for water that the plant hasn’t absorbed. Without that exit, water collects in the bottom of the pot, displaces oxygen in the soil, and creates the damp environment where root rot fungi thrive. That’s why every serious gardener — indoor or outdoor — reaches for drainage-hole pots as the default.

The material matters less than the hole. Terracotta and unglazed ceramic add a bonus: the porous walls wick moisture from the soil, helping it dry more evenly. Plastic and fiberglass hold moisture longer, which can be useful for plants that like consistent dampness — but only if the drainage hole is there to dump the overflow.

How to Use a Drainage Pot Correctly

A drainage hole alone doesn’t finish the job — the water has to go somewhere after it exits. That’s where the saucer comes in. The saucer catches the runoff so it doesn’t stain your shelf or floor.

After watering, dump the saucer after about 30 minutes. Letting the pot sit in the drained water defeats the purpose — the soil wicks it right back up. For indoor setups, a raised pot or one with small feet under the base improves airflow under the pot and keeps the drainage hole unblocked.

If the planter has a removable plug, you have flexibility. Outdoors, remove the plug to let water drain freely into the ground. Indoors, keep the plug in and use the attached saucer — or pull the plug and set the pot over a drainage tray.

When you’re ready to buy, check our tested roundup of the best plant pots with drainage holes for options that fit your space and budget.

When the Pot Has No Drainage Holes

Some of the most attractive decorative pots — cachepots — arrive without drainage. You have two honest options, and one is clearly better.

The better route: use the non-draining pot as a cachepot — a decorative outer shell. Plant your plant in a plain plastic or terracotta pot with drainage holes, then set that inner pot inside the cachepot. Water the inner pot normally; dump any water that collects in the cachepot’s bottom after every watering. This gives you the look you want and the drainage your plant needs.

The riskier fallback: plant directly in the non-draining pot and water very sparingly, measuring each pour so no excess accumulates. This works only for experienced growers who understand exactly how much their plant drinks. For everyone else, the cachepot method avoids the gamble.

What doesn’t work: adding a layer of rocks or gravel at the bottom of a non-draining pot. The water still sits in the pot — it just sits below the soil line, where roots still reach it. The reliable fix is the inner pot with real drainage.

Drilling Your Own Drainage Holes

If you fall in love with a pot that lacks holes, you can add them — but only in certain materials. Here’s what the DIY guidance says:

• Ceramic and glass: requires a diamond or masonry drill bit, safety goggles, gloves, and a steady spray of water to keep the bit cool. Slow, gentle pressure; forcing the bit is the fastest way to crack the pot. Keep the drilling surface wet throughout.
• Plastic and resin: a standard drill bit works fine. Start with a small pilot hole and widen it gradually.
• Metal and concrete: masonry bits for concrete; metal bits for thin-gauge metal pots. Both are doable but require more patience and a firm surface.

Start with one hole at the center, then add a second or third in a ring pattern if the pot is large.