IIRC, pine needles can make the ph of your soil acidic, which is good for blueberries, and azaleas etc. Depending on how much, and what you are planting, it should be ok.
Yeah, I need to do a soil analysis anyway so it won’t put me out any.
I have red clay so use a powdered lime in the planting furrow along with the 10-10-10 fertilizer I usually use.
Thanks much.