I’m starting out my girls in a tent and then transferring outside once they get big enough. To fill up big pots with soil is very expensive in my case (24 plants) . So what does the soil matter as far as nute content if im regularly feeding them nutes?
Thanks
Short answer is that you need to know what nutes are in the soil so you do not over feed. I choose to have nothing in the soil and add the nutes the plants need as they need them.
I use Sunshine mix #4 with some extra pearlite added.
Tons. If it is super nutrient rich or has time release nutrients, you can burn your plants up before they even have a chance to really grow. If there is little to nothing in the soil, then you’re going to be spending more on nutrients.
For 24 outside plants, I highly suggest looking into living soil or organic growing. When properly amended, you only need water. The initial start up cost may be a little high, but the soil is reusable and, over time, actually gets better and better.
I’ll add that you also want a soil that is pH buffered for cannabis. Cannabis nutrient uptake is sensitive to the pH level of the soil that you are using.
You also want a soil that is loose and airy for O to get to the root mass.
How do I find out the nute content? I have a ph tester for soil that I used at the spot where I’m planting. It says the ph was 7.4 . How can I lower that and find out what nutes are in that soil?
Label on some bags says ‘guaranteed analysis’ lists a few minerals.
Part of soil mix is stuff for moisture properties, peat moss coir perlite bark sand and others things not adding nute.
The organic matter/compost gives nutes in the soil. See ‘decomposed forest products’ or manure on the label. Look for added amendments like bone meal blood meal guano kelp etc. All add up to nutes. I dont know numbers/specs but can compare labels and see which are hotter soils.
@Jaysittinback has the idea…some soils are sold with nutes…so they usually will say how long you need to go without adding any. Other soils are sold with no nutes present, so you add them as you go.
If you do not know what you have the best way is to measure the TDS of your runoff after watering. Most nutes give a recommended runoff TDS value. You adjust ph by adding ph up or ph down solution…fairly cheap online.
I grow with inert soil so some of the other folks on here familiar with getting plants ready to go outside may have more specific advice for you.
Sunshine mix #4 is peat moss very similar to HP promix so you could add some organic amendments worm castings, biochar and others
I meant the nute content of the soil in the ground not the bag
[Organic Soil Testing Services - Tests, Prices and Sample Report]
A place like this is the only way to know @Mike88
Look into your local garden center. See if you can get a pickup truck load of basic potting soil. My short bed Dodge is about $64 to fill the back with soil in bulk. Nothing fancy just basic.
Next look into a few dry amendments to add to it. Maybe some bio-live, neem seed meal ect. This will allow you to fill a lot of large outdoor pots for cheaper. And is probably a bit better overall in my opinion.
Once you got that going for you look into planting some cover crop. A soil building mix! There are tons of verities on the market that do a great job. Let that grow for a few weeks before you transplant your laddies to the outside garden.
Once that cover crop is going nicely buy yourself a few thousand worms. Toss a nice handful into each pot and let them go to work.
Once you get your plants into their forever homes you could always toss alittle straw in top of the cover crop. This will choke it out and allow it to turn into a mulch. The worm will eat the mulch and carry the nutrients down into the soil.
So to answer your first question. Yes!! Soil definitely matters 
Happy farming…