Thank's for the responses,...I think i'll crush some,Maybe put it in a
strong burlap sack and drive over it a few times,and add it to my soil.I
still plan to use some as mulch on potted tomato plants to reduce moisture
loss and discourage weeds.I'm going to try some seaweed as well. I'll keep
you posted....Hoss out...
"FarmerDill" wrote in message
...

I have acess to lots of oystershells,and knowing that they are mostly
calcium. I was thinking of using them in my garden,maybe as a mulch for
potted plants or buried in the container or garden.Any thoughts?....

Oyster shells are primarily calcium carbonate similar to limestone and
marble
chips. Very good for reducing soil acidity but very bad for acid loving
plants.
You could use crushed oyster shells in lieu of ground limestone or whole
oyster
shells in places where you would use a marble chip mulch.