Is there anything that can be done to clay pots to seal them up. Either
something to spray on the whole thing or just to coat the inside. I like the
look of clay pots but after time minerals and crud start to leach through
the pot. I do clean them off from time to time. Has anyone every done this
before and what have you used.
I would not seal them. I use clay pots specifically because they
Moisture evaporating through the sides (even when they don't look
damp) keeps the soil in the pot cool even in full sun. It's that
evaporation process that causes the mineral build-up on the
outside of the pot.
There is also some air penetration into the pot through the porous
sides, which is very important for confined roots.
David E. Ross
Climate: California Mediterranean
A couple of years ago, I made the mistake of trying to seal a few of
my clay pots with a clear spray acrylic. They looked pretty good the
first season, but by the second season, the acrylic began to peel off
in yellowish flakes, and it got progressively worse. Also, this did
not deter the natural tendency for clay pots to leach mineral
deposits. Finally, I used a wire brush to remove the rest of this
yellow scale, so I was able to salvage the pots. Like others have
said, due to the porous nature of clay, it is probably not a good idea
to try to seal it.
I do have a strawberry pot from Mexico that I acquired about 10 years
ago. It has a black (tar?) sealant on the inside, but the outside was
not treated. It has survived fairly well over the years. Every fall,
I empty my clay pots, clean them, let them dry, and then store them
upside down on a shelf out of the weather for the winter, so they
won't get wet, freeze, and crack.
Hope this is helpful.
I've seen something similar. Strips of aluminum foil placed on the
ridge of a clay pot growing African violets. The salts tend to rot
the stems and the foil prevents that. I like clay pots, although they
do show salt deposits. Plant roots benefit from the properties of clay
pots, and sealing the pot removes that benefit. To clean them, soak
the pots in a bucket of water for several days, then repeat with fresh
until the water is clear. You can always buy terra-colored plastic
pots or set the clay pot in another container.
On Sun, 14 Dec 2003 07:14:53 -0500, "Nicole Thompson"
The nurseries here sell a water-based proofing liquid. You paint the new
pots with it (inside and out) and it soaks into the terra cotta. You let it
cure for 24 hrs before use. The color of the pot is not affected.
In a previous post on this thread I described a pot sealing solution. The
Haney Pottery Sales Ltd.,
For those south of the border, I would imagine that your local nursery could
either order it from them or find out who the manufacterer is.
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