How to Wash Terracotta Pots: A Simple Guide to Removing Mineral Buildup

Terracotta pots are plant community royalty—and for good reason. Their earthy look and breathable material help regulate moisture, keeping houseplants happy. But over time, they tend to collect a chalky white residue that’s... less cute. While some folks embrace the rustic look, too much buildup can actually harm your plants. So, yeah, it’s worth giving your clay pots a good wash every once in a while.

Why Do Terracotta Pots Get So Dirty?

Most of the grime you’re seeing? It’s mineral deposits. Tap water (aka hard water) contains salts and minerals that leave behind chalky white residue—usually around the rim or base of the pot. This buildup can also come from fertilizer, which seeps into the porous clay over time.

If left unchecked, that residue can clog up the pot’s natural airflow or even affect the soil and root health. So, let’s get scrubbing.

How to Clean Terracotta Pots in 3 Easy Steps

Here’s the easiest, safest way to deep-clean terracotta pots using plain white vinegar:

Step 1: Soak
Fill a container with a vinegar solution (1 part white vinegar to 10 parts water) and soak your pots for 30 minutes to 1 hour. This will start breaking down the mineral deposits.

Step 2: Scrub
After soaking, use a reusable sponge or scrub brush to gently clean off any leftover white spots or stains.

Step 3: Rinse & Soak Again
Rinse the pots and soak them in fresh water for another 30 minutes to neutralize any remaining vinegar. Let them air dry—and boom, good as new.

How to Prevent Buildup in the First Place

Flush your soil: Once a month, run water through your soil for 10–15 minutes to help flush out excess salts and minerals.

Switch up your water: If you’re using hard tap water, try switching to distilled or rainwater for fewer deposits.

Monitor fertilizer use: Avoid overfeeding your plants, especially with synthetic plant foods that leave more residue behind.

Terracotta is timeless, but buildup doesn’t have to be. With a little vinegar and some elbow grease, your clay pots can keep looking fresh and functioning like the breathable beauties they are.