Beets—Simple Cooking – Harvest to Table
Harvest beets when the greens are 4-6 inches (10-15 cm) long and the roots are about 2 inches (2.5 cm) in diameter–1 inch for baby beets, up to 3 inches for mature beets. Large beets are not as tender or as flavorful as medium-size or smaller beets. A beetroot should be firm and deep colored.