Beets are easy to grow and are rich in iron and vitamins A and C. The tops may be harvested as greens. Beets are sensitive to acid soil, optimum soil pH for beets is 6.0 to 6.8, but pH up to 7.6 can be tolerated. Lime should be applied according to soil test recommendations at least 30 days before planting. Sow successively at about three-to-four-week intervals from early spring to mid-August for a continuous supply of young, tender beets. Plant seeds 1/4 to 1/2 inch deep in rows 18 inches apart or wider if you use a mechanical cultivator. Beet seeds are actually fruits containing several seeds. Thin the seedlings when well established to stand 2 to 3 inches apart in the row.
Problems: Boron deficiency in the soil can cause hard or corky black spots scattered throughout the root in light-colored zones. Boron should not be applied if there is not a deficiency as there is a narrow range between deficiency and toxicity. To alleviate boron deficiencies, sprinkle 1/4 pound of borax/1000 square feet where beets are to be grown. Do not plant beans or soybeans in the same area for a year or two, since these vegetables are sensitive to boron toxicity. Also, close planting or failure to thin can cause undersized roots to form.
Harvest for greens when the tops are large enough for cooking. For good quality roots, harvest when they are 1-1/2 inches or less in diameter. Beets will keep for several months if packed in moist sand and placed in a basement or garage. Do not let them freeze. Before storing, trim off all but 1/4 inch of the tops.
