@912GreenSkell and
@Habitual --
Last night I went out to the site and scrunched myself a nice golf ball size lump of earth / dirt, dropped it in a plastic bag and took it home to test.
It's a dark yellow color, not fully clay though.
Has a few rocks in it here and there, but they can be pulled out.
Has some organic matter, leaves and twigs and stuff, not much broken down.
A lot of this earth has only recently been bulldozed from high rainfall mountain side jungle.
I did some research online for this area.
It's supposed to be fairly acidic due to the high rainfall.
GreenSkell's finger push test -- the soil does break apart, it isn't clay enough to just stick as a ball.
How to test for pH and TDS?
Not sure, so I dropped the lump in a flat bottom tumbler glass.
TDS and pH tested some tap water -- 80 ppm and about 6.5 pH -- and added that.
Mixed it all up nice, and let it sit over night to settle.
In the morning, the bottom is the earth, then brown colored water, with some leaf matter floating on top.
pH and TDS tested it:
pH was the same at 6.5, which was a BIG relief. Adjusting pH is a major difficult hassle outdoors.
TDS was ... 50. WTF?!?!?! How could the TDS be less than the tap water that I put into it?
The last thing was really weird, to be honest.
Since I'm going to dig holes in this soil and add potting mix and coco anyway,
I don't think I'm going to do much to amend this soil.
Maybe just dig the hole, then throw in a bit of perlite / vermiculite and maybe some dolomite lime*
(not too much lime, because it'll throw the pH out too much),
then pour in my potting mix, coco, perlite and vermiculite mix with some water storing crystals.
* I'm still undecided between using dolomite lime in the soil, or CalMag supplement.
Then in goes the 3-4 week old seedling.
The soil test was a better result than what I feared.
Now, for a nice break in the weather this weekend.
Hopefully my batch of growing supplies will be in soon.
Thanks for your help, guys!!!