I have recently put some Dolomitic Limestone on the surface of my in ground fig tree to reduce more acidic soils. Can I also put some on my potted fig tree for same reason. Does it help fig tree to stay healthy or not ?

Absolutelly it does help,in pot or in ground.
In pot soil became acidic when fertilizer is applied,and in pot one have to use some fertilizer.
So limestone dolomitic ,calcitic,all is good,for fig tree.

Hi pacifica,
Could you post a pic of the product ? The bag, and the product inside of the bag ?
I've been using extinct lime on the trunks. It seems efficient at deterring ants, slugs and caterpillars/moths.
Some mix lime and flour 1/3 and 2/3 and lay that around as baits for killing rodents ...

Extinct lime is a powder (like cement but white). I buy that at construction shops ... It is cheaper there . You can find some in nurseries ... But they sell it for gold, it seems .
The bag will last 2 or 3 years here.

I was wondering how limestone dolomitic would look ...
I saw something labeled "dolomitic" here around ... But again in a nursery, and sold for gold .
I like my trees ... but I avoid expensive products.

-  Dolomite is used as an ornamental stone, a concrete aggregate, and a source of magnesium oxide
-  In horticulture, dolomite and dolomitic limestone are added to soils and soilless potting mixes as a pH buffer and as a magnesium source. Home and container gardening are common examples of this use.
-  Where calcite limestone is uncommon or too costly.

I think that the idea is that,
- Most fertilizers are Acidic.
- Limestone help buffer changes in pH, so It is good idea to add limestone first then add your chicken manure later.

Also, It is a good idea to use PH meter as well

I checked all my potted fig trees this morning using soil tester and found the ph is over 7 including my flowerbed. In this case I better not to use this dolomitic limestones for now right. Can I use coffee ground to make my soils more acid ?

It is up to you using coffee grind.
Coffee G,is acidic for sure.

Hi pacifica,
Dolomitic lime is supposed to add magnesium and calcium too. (some of ) Both are required for a good fruition.
I would still give a light shot of Dolomitic lime especially if the tree is in the pot for the second season. Fig trees can handle a more basic PH than PH 7 . Just don't over apply . I like to go with a hand full of this or that ...
The choice is yours, good luck !

Although coffee ground is acidic due to "coffee", it is not quite stable after composed, After break down, it can be quite alkaline.

Peat moss is more acidic and stable and widely used in garden.

- Sphagnum Peat Moss
- $7.99C for 2.2CF   or $9.99C for 4CF

you can simply mix on the surface of the garden soils, However, it will take 1 to few weeks to bring PH level down.

It has instructions on package, Please read it and follow its instructions.

Thanks Ricky !

That's a pretty good price. I pay twice that.