According to the University of West Virginia, containers are a great way to garden if you have limited space outdoors, such as with an apartment or condo, or if your soil it too poor to grow anything. Large containers can hold a lot of plants, so they are handy for bunches of flowers, vegetables, a shrub or even a tree. Like other containers, large containers can be moved indoors and out as the weather permits so they are more versatile than in-ground gardens.
Fill the bottom of the container until it is 1/2 or 2/3 full of potting soil. This should be a little deeper than the depth at which you need to set the plants.
Dig a hole in the soil large enough for the plant's root ball. The plant's crown should be 2 to 3 inches below the upper edge of the container. Dig multiple holes if you are planting more than one plant.
Loosen the plant's roots gently and place it into the container, pressing it into the soil lightly. Do this to each plant if you are planting more than one.
Fill the rest of the container with potting soil and pat it down firmly when it is ½ inch taller than the plant's crown.
Water the container well until water drips out of the drainage holes. The water should make the soil settle around the plant's crown. If not, pat it down firmly.