The only potential problem could be the transmittance of diseases and pests from one year to the next. If your garden is generally healthy, then this shouldn’t be a problem. But, for added precaution, you could bake batches of the soil in your oven at at least 325 degrees F for 2–3 hours to kill off any nasty things.
Adding fertilizer is good; you may want to test your soil pH as well, and add lime or peat as necessary.
The only potential problem could be the transmittance of diseases and pests from one year to the next. If your garden is generally healthy, then this shouldn’t be a problem. But, for added precaution, you could bake batches of the soil in your oven at at least 325 degrees F for 2–3 hours to kill off any nasty things.
Adding fertilizer is good; you may want to test your soil pH as well, and add lime or peat as necessary.