Vegetable · Amaranthaceae
Beet
Beta vulgaris subsp. vulgaris
Pop the seed straight in the ground, thin it early, and pick it young, and you'll get sweet roots plus a bonus of edible greens.
Full sun
Every 3–7 days
50–77°F · 10–25°C
50–70 days
Overview
Think of the beet as a cool-season root crop that hands you two harvests off one plant: the chunky root down below and the leafy tops up top. It's a cousin of chard and spinach, and it shares their deep pigment, the kind that'll leave your cutting board stained red. Why do gardeners keep coming back to it? Because it's easy, fast, and forgiving, and it's ready to pull in well under three months.
Beets really are a two-in-one crop. Twist off a few outer leaves for dinner and the root just keeps on growing, then dig the whole thing once it's big enough to eat. They like it on the cool side, which is handy, because that lets you slot in a spring planting and a second sowing for fall.
Most of what makes beets work boils down to two simple habits. Give the crowded seedlings a thin so each root has breathing space, and harvest while they're still young and tender. Skip one of those and you'll end up with small, lumpy roots or tough, woody ones that nobody wants to eat.
Care
The short version: full sun and loose, well-drained soil sitting around a pH of 6.0 to 6.5. Keep the bed evenly moist, thin the seedlings to 2 to 3 inches apart, and pull the roots while they're young at 1.5 to 2 inches across.
Light
Beets are happiest in full sun, though they'll still produce in partial shade, where the roots just take their time. Try to give them at least six hours of direct light a day if you want the biggest roots.
Water
Keep the bed evenly moist all the way from sowing to harvest. That steady moisture is what makes the roots sweet and tender, while a dry stretch followed by a heavy soak leaves them tough and likely to split.
Soil
Beets want loose, well-drained loam or sandy soil with plenty of organic matter, since a hard clay bed cramps the root and stunts it. They like a pH between 6.0 and 6.5, just a touch on the acidic side of neutral.
Temperature
Being a cool-season crop, the beet does its best work between 50°F and 77°F (10°C to 25°C). It takes a light frost in stride, and honestly, a long run of summer heat is far more likely to turn the roots woody than the cold ever will.
Humidity
Regular outdoor humidity works just fine, so there's nothing to fuss over here. What actually counts is airflow more than the moisture in the air, because leaves that sit crowded and damp are the ones that catch leaf spot.
Feeding
Feed at planting time with a balanced, moderate-nitrogen fertilizer, and let a soil test steer you if you can. Keep a light hand with the nitrogen, or you'll grow plenty of leafy tops and not much root, and only bother with boron if a test says the soil is short.
Pruning
There's no pruning to do with beets. Feel free to snip a few outer leaves as greens while the root carries on, but leave the central crown be so the plant can keep feeding the root.
Repotting
Not applicable; a direct-sown root crop that is not transplanted.
Size & spacing
Plants top out around 8 to 18 inches (20 to 45 cm) tall with a fairly compact spread. Thin the seedlings to 2 to 3 inches apart and you'll give every root the space it needs to swell to full size.
When to plant
Beets are a cool-season crop that won't put up with transplanting, so the seed heads straight into the garden. Get the first sowing down 2 to 4 weeks before your last spring frost, then plant again in mid to late summer for a fall round, with each batch ready to harvest about 50 to 70 days on.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Not recommended; beets do not tolerate transplanting and should be direct seeded.
- Plant: Direct sow about 2 to 4 weeks before the average last spring frost; sow again in mid- to late summer for a fall crop.
- Harvest: Harvest roots at 1.5 to 2 inches in diameter, roughly 50 to 70 days after sowing; larger roots may become woody.
Hardiness
USDA hardiness zones: 2–11
Temperature: down to -46°C
Troubleshooting
Beet trouble shows up in two places: the leaves you can see and the root tucked underground. The leaf problems are easy to catch with a glance, but a couple of root issues only reveal themselves once you cut one open. Find your match below, then fix things before the next sowing goes in.
Brown leaf spots with reddish-purple rims
Seeing tan blotches ringed in reddish purple? That's cercospora leaf spot, the disease beets run into most, and warm muggy weather is exactly when it takes off. The tiny circular spots run about an eighth of an inch across with pale gray middles, and they hit the oldest leaves before anything else. Pull the worst-hit leaves, give plants enough room to breathe, and aim your water at the soil so the leaves stay dry.
Fix:
- Remove and destroy heavily infected leaves
- Improve air circulation with proper spacing
- Avoid overhead watering and wetting foliage
Dark corky spots hidden inside the root
Slice a beet open to dark, sunken, corky patches and the culprit is boron deficiency, which also goes by internal black spot or black heart. Don't reach for a generic fix, because the answer here is narrow: run a soil test first to confirm the boron is genuinely low. Then add only what the test asks for, since piling on more boron will poison the plant instead.
Fix:
- Apply boron only as directed by a soil test result
Pale winding tunnels inside the leaves
Those pale, wandering tunnels and blistered patches come from beet leafminer grubs munching the soft tissue sandwiched between the top and bottom of the leaf. Tilt a leaf toward the light and you'll usually catch the larvae sitting right inside the mines. Strip and bin the affected leaves, pull weed hosts like lambsquarters that feed the pest, and drape young plants in row fabric so the adult flies never get a chance to lay.
Fix:
- Pick off and destroy mined leaves
- Remove nearby weed hosts such as lambsquarters
Tough, woody roots that are hard to eat
Leave a beet sitting in the ground too long, especially through summer heat, and once it grows past about 2 inches across it goes woody and stringy. Sadly, a root that's already gone hard won't come back, so there's nothing to do but learn for next time. Lift them while they're young at 1.5 to 2 inches, and start a fresh batch every couple of weeks instead of leaving a crop to sit.
Fix:
- Harvest younger, smaller roots at 1.5 to 2 inches in diameter
Toxicity
If you've got pets or little ones around, you can relax: the beet is a non-toxic food crop from the root all the way to the leaves. Every part is safe to handle and to eat, and the most dramatic thing it'll do is harmlessly tint urine or droppings red for a day. Nothing here needs fencing off.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
A cat that grabs a bite of beet leaf or root is in no danger, since the plant isn't toxic to them. Wolf down a big serving of the rich root, though, and a cat may get a loose tummy that clears up by itself.
Dogs None
Beets are fine for dogs in sensible amounts, and you'll even spot cooked beet listed in some pet foods. Because the root packs so much fiber, a big portion can leave a dog with a passing bout of indigestion.
Horses Safe
Both the tops and the roots are safe for horses, and beet pulp shows up as a regular feed ingredient. Just dice the root first so a whole one can't get stuck going down.
Rabbits Safe
Rabbits handle beet greens and little pieces of root just fine alongside the rest of their food. Since the leaves hold oxalates, keep them as an occasional treat instead of an everyday item.
Livestock Safe
Cattle, sheep, and goats can graze the tops and roots without trouble, and fodder beet is raised on purpose for feed. Ease them onto the rich greens gradually so the rumen has time to adjust.
Birds Safe
Backyard chickens and pet birds happily peck at beet and the greens with no ill effect. You might see the droppings tinge red for a bit, but that's nothing to worry about.
People Safe
People eat both the root and the leafy tops, and both are good for you. The plant's natural pigment can tint urine or stool pink for a day, a harmless quirk called beeturia.
Beets are high in oxalates and their betalain pigments can harmlessly turn urine or stool pink or red in people (beeturia); this is a dietary note, not a sign of pet poisoning.
Varieties
There's no shortage of beet varieties out there, from deep-red rounds to fun candy-striped types. Here are the ones you'll bump into most in home gardens.
Detroit Dark Red
A garden favorite for ages, this heirloom gives you round, uniform, deep-red roots with flavor you can count on.
Red Ace
This hardworking hybrid is loved for its sweet, tender roots and a generous flush of greens you can use too.
Chioggia
Slice this Italian heirloom open and you'll find candy-stripe rings of red and white, ready in about 50 to 60 days.
Red Cloud
If you want a tidy choice for the backyard plot, this smooth, round, deep-red hybrid comes up again and again.
How to propagate
Beets come from seed, full stop, and they keep it pretty easy, though there's one quirk worth knowing before you start.
SeedEasy
Direct sow in spring 2 to 4 weeks before the last frost, or in mid- to late summer for a fall crop. · Germinates in about 5 to 14 days; thin multigerm clusters once seedlings reach 3 to 4 inches tall.
Seed is the only way to go with beets, and they'd rather not be moved, so the seed goes right where it'll grow. Tuck it about half an inch deep, 2 to 4 weeks ahead of your last spring frost, then run another round in mid to late summer if you want a fall crop. Sprouts poke through in roughly 5 to 14 days, and since each seed ball throws up a little cluster, thin them to 2 to 3 inches apart once they hit 3 to 4 inches tall so the roots get the elbow room they need.
Myths
Each beet seed grows into a single plant.
Here's a surprise: most beet seeds are really multigerm seed balls, little clusters that each carry a handful of embryos and sprout in a bunch. So that neat row you planted comes up looking packed. The fix is easy, just thin the seedlings to 2 to 3 inches apart and give every root the space to bulk up.