I finally started on my new garden spot, still have to remove grass. What kind of soil would u call this? (It had a clay feel but I don’t know if that’s because it’s done nothing but rain for awhile now). Also, I have a lot of bags of garden soil I bought years ago (3+) should I throw that in this spot and till into it? I will take a sample of dirt to get tested, should I wait to add garden soil or add it and then have tested?