Pull beets 60 to 80 days after seeding, once the roots have reached the size you want. Beets headed for the table can come out of the ground as soon as they are big enough. Beets headed for storage need more care: top them and hold them at 33 to 36 °F with very high humidity. Pushing toward 32 °F feels like the safe choice, but beets spot and rot more there. With the leaves still on, they last 10 to 14 days at most.
Why colder is not better for beets
USDA Agricultural Handbook 66, the federal reference on commercial storage of fruits and vegetables, includes a chapter on beets by F. Adamicki. It puts topped beets at 1 to 2 °C, which is 33 to 36 °F at 98% relative humidity. Then it adds a warning: during storage at 0 to 1 °C (32 to 34 °F), more black spot and rot occur than at higher temperatures.
That is a narrow window. A degree or two separates the recommended range from the one that causes trouble, and the range that causes trouble sits closer to freezing. Most gardeners would guess the opposite.
Why does this contradict what you do with carrots?
Gardeners tend to carry one rule across all their root crops: get them as cold as you can without freezing them. With carrots, that habit works. Beets break the pattern. A cellar thermometer reading 32 or 33 °F looks like a success, and for beets it is slightly the wrong side of the line. The target is a little warmer than that, with humidity close to saturation.
The humidity number matters as much as the temperature. At 98%, almost no moisture leaves the root. Roots that sit in drier air shrivel, and the dry air of a household refrigerator or a heated room works against you for that reason alone.
How long do bunched beets keep with the leaves on?
The same handbook says bunched beets, with the leaves attached, keep for about 10 to 14 days at 32 °F and above 98% humidity. That duration is a ceiling reached under ideal conditions. A beet bunch sitting in an ordinary kitchen will not make it that long.
For anything beyond two weeks, top the beets first. Twist or cut the leaves off, leaving a short stub of stem, and store the roots on their own. The greens can go into a separate bag and get eaten within a few days.
Where in the house that actually is
The target is 33 to 36 °F, and no single spot in a house delivers it by default. A refrigerator is set for milk and leftovers, and its cold spots, especially near the back wall, can run colder than the beet target. A heated room is far too warm. The source gives a wider safety band for pits and cellars: the temperature should stay between about 31 and 41 °F. Below 31 °F the roots start to freeze. Above 41 °F they soften and sprout.
The closest match in most Maryland homes is an unheated basement or a cellar room along an outside wall, away from the furnace and water heater. A stairwell enclosure or a cool corner of a root cellar fits the bill too. Eastern Shore homes often have no basement at all, so a insulated, unheated closet or a cooler along a north wall may be the best option there. In Garrett and Allegany counties, an unheated garage can dip below 31 °F in a hard stretch of winter, so it needs watching.
Put a thermometer in the spot for several days before you commit a harvest to it. A min-max model is worth the few dollars because it shows the overnight low you would otherwise miss. Read it at the height where the crates will sit, since air near a concrete floor runs cooler than air at shoulder height. If the low stays above 31 °F and the high stays under 41 °F, the space qualifies. If it hovers near 36 °F, even better.
Humidity is the second thing to solve. Packing roots in a perforated bag, or in a crate with damp (not wet) sand or sawdust, helps hold the air around them close to saturated. Check them every week or two and use any that start to soften.
Size matters before the beets ever go in the crate. The source is explicit that large roots keep much better than small ones, because they lose water and shrivel more slowly. So keep the big roots for storage and eat the small ones now, or you will lose the small ones to wrinkling long before the large ones show any wear. It runs against instinct, since the biggest beets look like the ones to eat first.
When are beets ready to pull in Maryland?
Beets are sown in place, so the 60 to 80 days on a seed packet count from seeding. NOAA NCEI climate normals put the last spring frost at the reference station between April 3 and April 16. Western Maryland is mountainous and runs weeks later. The Eastern Shore runs milder. A spring sowing made around those dates comes ready depending on the variety and the weather. Counting from the date you sowed is more reliable than counting from the first warm day.
The better check is the root itself. Brush the soil back from one beet and look at the shoulder. If it has reached a size you would happily eat, the rest of the row is probably close. Pulling a test beet costs one beet, and it beats guessing. Take the small ones for the kitchen first, which leaves the bigger roots a little more time in the row and gives you the best candidates for the cellar.
Soil and weather can shift the timing. The Sassafras series, an Ultisol that USDA lists as representative of Maryland, is sandy: 67 percent sand, 10 percent clay and 23 percent silt in the surface layer, with about 1.6 percent organic matter and a pH around 5.3, which is strongly acid. It is well drained. That is a starting point for what the region’s ground tends to do, not a reading of any one garden, and river bottoms, hill country and scraped or filled lots will differ. A soil test through your county extension office gives the number that applies to your bed. For more on what beet roots meet underground, see Beet Soil in Maryland: What the Root Will Meet.
Utah State University Extension describes beets as wanting deep, sandy, well-drained soil rich in organic matter, amended with no more than 1 inch of composted organic matter per 100 sq ft. Sandy ground drains fast, which suits the roots but also means a dry week bites sooner. Two different problems follow from thirst, and they should not be mixed up:
- Water stress in the first 6 weeks can cause premature flowering (bolting), and a bolted plant stops putting its energy into a good root.
- Heat above 85 F combined with water stress later in the season makes the root woody.
A woody beet is a late-season failure, and watering during the first weeks will not fix it later. If a hot stretch is coming and the beets are near size, pulling them early is a reasonable move. The same goes for beets that have been stressed: a root that has turned woody will not recover, so there is no reason to leave it in the ground. For the insects and animals that go after the crop while it waits, see What Eats Beet in Maryland, and When, and for the full season in one place, Growing Beets in Maryland.
Common questions
How many days do beets take from seed to harvest?
Plan on 60 to 80 days from seeding. Beets are sown directly in the garden and are not transplanted, so the count starts the day the seed goes into the ground. The shorter end applies to early roots you want to eat small, and the longer end applies to roots you are growing big for storage.
Can I store beets in the refrigerator?
For a week or two, yes, but a refrigerator is not designed for the 33 to 36 °F target, and some spots can run colder. Handbook 66 reports more black spot and rot at 32 to 34 °F than slightly warmer. Use a thermometer in the drawer, keep roots in a perforated bag to hold moisture, and avoid the back wall.
How long do beets last with the greens attached?
About 10 to 14 days, at the best conditions: 32 °F and above 98% humidity. That is the maximum, so a kitchen counter or a warm room will cut it short. Top the roots if you want them to keep longer than that.
Which beets should I keep and which should I eat first?
Eat the small ones first and store the large ones. The source says large roots keep much better because they lose water and shrivel more slowly. Small roots wrinkle quickly in storage, even in good conditions. Check the crate every week or two and pull out anything that has softened or developed spots.