m0useanswered grow question 3 years ago If its soil soil I say you don't have to but will notice easier growth indoors if you do.
As its super soil and a mix of things, I would PH it down to 6.5-6.8. this is what I grow in and my mix needs it.
Depending whats in yours, it might not be needed. peat is acidic coir not so much.
Good Luck!