Eucalyptus and oyster husk calcium hydroxide

I read "The method to let Okamurasaki lavender bloom in Kagawa" of Ossan-lavender san (user name).

You sprinkle a large quantity of organic lime, and you sprinkle a large quantity of water, and let's dissolve organic lime.
He said,  do not mind the freeze.

I sprinkled a large quantity of oyster husk calcium hydroxide on a eucalyptus and dissolved it with a large quantity of water in spite of the coldest time.

I photographed this in January.

Because I have sprinkled it on all pots, I do not understand the difference of the growth when I do not sprinkle it.

I add some information,

In Australia,
Limestone of world heritage Pinnacle,
The beautiful shore of the sand bar that limestone was pared off,
I feel that there are many things which assume lime a keyword.

Some of Eucalyptus growing wild should be brought up in the ground of the limestone that the bottom of the sea rose.
In that case, what does a eucalyptus grow in the nourishment source in in desert?
I thought the nourishment source of the eucalyptus to be calcium water and mineral water.

But, there may be a factor elsewhere

If keyword is a calcium, a mineral, and calcium hydroxide , is oyster husk calcium hydroxide one of the choices as a nourishment source of the eucalyptus?
I have sprinkled a large quantity of oyster husk calcium hydroxide like Hanasakajii-san without the consequences.

As a result, I seemed not bad for a eucalyptus.