What are some of the things beginners need to know to get started growing vegetables in containers? It’s not rocket science, but you need a good container and a good growing medium, or dirt. But you’re not going to do very well if you just dig up some dirt from the ground. A common soil mix for container gardening is equal parts peat moss, perlite or vermiculite and compost. I personally prefer perlite.
As for picking a container, bigger is usually better. This is particularly for vegetables that produce fruit like tomatoes, cucumbers, squash or beans. The size of the plant above ground is directly related to the size of the root system below ground, so bigger containers yield bigger plants and bigger harvests. Some herbs and leafy greens will only get so big, so they can be grown in smaller containers. Other greens like kale can grow into monsters if they have large enough containers.