Detroit dark red beets are an old, popular favorite with gardeners. This hearty beet produces sweet and tender bulbs and delicious leaves for greens. Many gardeners put these beets in garden rows, but you can successfully raise them in a container garden on your patio or balcony.
Plant your beet seeds early in the spring, about three weeks before your last frost. You can find your garden's frost dates in the Farmers' Almanac or through your local extension service.
Fill your planter container with potting soil. Mix in slow-release fertilizer according to the package directions.
Plant beet seeds in your container 2 inches apart and 1 inch deep in the soil. Water the planter thoroughly. Place the planter in a spot that will receive at least six hours of sun per day. Keep the soil in the planter evenly moist, checking it every day to make sure that it doesn't dry out.
Thin your seedlings after a week or two, when they have a set of true leaves. Thin plants down to one plant every 3 inches in either direction. Use these thinnings as healthy greens in your salad.