Predominantly in ground but there's always a need for containers. I believe I have some pathogens in the ground which affect some plants. Those I grow in containers in clean soil and up out of contact with the ground. Some plants would get lost amongst others and do well in hanging pots. And some plants do better without competition from other plant roots. So there's a variety of reasons for having container plants even though you prefer in the ground. But because my garden is quite large, far less than 1% of my plants are in containers.