White spots/streaks on clay pots

pommom · ‎03-10-2010

What are these white spots on my clay pots? Are they mineral deposits and will they affect the growth of the plant?

If your face brightens when you meet a friend, you have struck gold. - unknown

RedTop · ‎09-01-2010

My guess would be mildew, which is the reason I don't like to use clay pots unless it is for outdoor plants in the summer.

RocketMom · ‎03-09-2010

Likely it is mineral deposits, not mildew, and should not affect plant growth.

Kachina624 · ‎03-10-2010

I would guess mineral deposits. I get them on my pots, and there is no mildew out here in the desert. There is poor water, however, with minerals. Won't hurt the plants.

New Mexico☀️Land Of Enchantment

Sweetbay magnolia · ‎04-14-2013

It's effervescence from minerals in the clay and water. I personally like pots that have that patina of wear and use. People pay to have that effect fabricated, when it can be had naturally. Give me moss, too! Matisse did a beautiful, simple painting of a pink geranium in a weathered clay pot.

Namaste to you as well.

Cogito ergo sum

JustJazzmom · ‎03-09-2010

If its on the inside of the pot, it could be some of the naturally occurring salt found in our water. Try some vinegar mixed with water and use a toothbrush to remove the mineral deposits if you dislike it.

☼The best place to seek God is in a garden. You can dig for him there. GBShaw☼

ValuSkr · ‎03-15-2014

I agree with previous posters - it's minerals and salts from the potting soil, water, and fertilizers. Sometimes it looks nice. But if you don't care for it, soak the pot in plain water for a day or two. Most of the white stuff will leach out of the clay and into the water with little or no scrubbing from you.