What’s going to matter most is if the plant can even live long enough when it turns to winter. If you put the plant in the ground using only the grounds dirt, it will depend on the fertility of the soil. I can’t imgaine the soil will be BETTER than a perfectly tuned super soil made specifically for cannabis, but plants have been growing in dirt on earth for a long time. It will grow. The more you do to help it the better. I live in the north and a regular type plant doesn’t have long enough summer to grow and produce worthy buds before it turns too cold and dies. Autos are the only option, that or light deprivation every night in the summer