I have my garlic planted along the garage and will harvest in June. It would be the perfect spot for my peanuts but I understand they aren't companion plants. Could I still plant my peanuts there once the garlic is gone?

I don't know about companion planting, but is there enough growing season then, there?

Yes, I live in coastal Carolina

Garlic is quite a "heavy feeder," so I think the only issue would be to be sure to fertilize appropriately when planting the peanuts.