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Vegetable Crop Calendars (A–C)Beet Planting Calendar for Spring and Fall
Beets handle cool weather well, so the calendar is built around soil temperature and the weeks you have before heat arrives or hard freezes return.
Key points
- Sow beets a few weeks before the last spring frost, once the soil can be worked.
- Use a soil thermometer to judge germination conditions.
- Thin early so roots have room.
- Fall sowings count backward from the first frost.
- Harvest young roots for the best texture.
When can you sow beets in spring?
Beets can go in the ground a few weeks before your average last spring frost, once the soil has thawed and can be worked. Cool soil slows germination but does not stop it. Seed in very cold, wet ground may rot or sit for a long time, so many growers wait for the soil to warm slightly.
Check your extension guide for the lead time before last frost that suits your area. For example, if your last frost usually falls in mid-spring, you might plan your first sowing for a few weeks earlier, and then sow again every couple of weeks.
A practical approach is to treat the first sowing as a test. Plant a short row early, see how fast it emerges, then follow with a second row a couple of weeks later. If the early row struggles in cold wet soil, you will know to wait a bit longer next year.
How does soil temperature affect germination?
Seed germinates faster as the soil warms toward a moderate range and slower when it is cold. A simple soil thermometer pushed into the seed zone in the morning gives you a useful reading. University tables give a minimum and an optimum soil temperature for beet germination, so look up the numbers in a current extension guide.
Each beet seed is actually a cluster that may produce several seedlings, which is why thinning matters.
Succession sowing works well with beets. A short row every two to three weeks gives you a steady supply of tender roots instead of one large crop that all matures together.
Why thin beets, and when?
Crowded beets stay small and may not form good roots. Thin seedlings when they are a few inches tall, and keep the strongest. The thinnings are edible as greens, so nothing is wasted.
Keep soil evenly moist during germination and growth. A crust that forms over the seed row can block seedlings, so a light covering of fine compost or vermiculite-free mulch helps.
If seedlings emerge unevenly, resist the urge to reseed the whole row. Fill gaps with a pinch of fresh seed and thin later, because beets at different stages tolerate each other better than bare ground tolerates weeds.
- Sow seed shallow in loose soil.
- Water lightly and often until seedlings emerge.
- Thin to the spacing in your guide.
- Use the thinnings as greens.
When is the fall window?
Beets are well suited to fall. Count backward from your first expected fall frost, allowing time for the days to maturity listed on your seed packet and a few extra days because growth slows as days shorten. A sowing made in late summer, while the soil is still warm, germinates quickly.
Fall roots are often sweeter, because cool weather encourages sugars. A light mulch can extend harvest into early winter, depending on how cold your area gets.
Stagger a late sowing so a few rows are still small when the first hard freeze approaches. Small roots under mulch are often easier to protect than large ones.
What soil do beets need?
Beets prefer loose, well-drained soil that is free of stones and has a pH near neutral, according to most extension guides. Heavy clay and compaction lead to misshapen roots. A soil test will tell you pH and nutrient status, and your extension office can help interpret it.
Beets can be sensitive to certain nutrient imbalances, and symptoms such as internal dark spots are discussed in state guides. Follow local fertility recommendations, and remember that nutrient management rules vary by state.
Mulch helps hold moisture, which keeps roots growing evenly and reduces cracking after a dry spell followed by rain. Lightly work a bit of compost into the bed before planting, guided by your soil test.
What mistakes lead to tough or small beets?
Letting roots stay in the ground too long in warm weather can make them woody. Uneven watering, crowding and hard soil also cause trouble. Pick roots when they are young and tender.
Leaf miners and other pests can damage tops. Ask your extension office what is active in your area and what is recommended. If you use any pesticide, follow the label, observe the pre-harvest interval and protect pollinators.
Store harvested beets with tops trimmed and keep them cool and humid. Follow tested guidance from the National Center for Home Food Preservation and your extension office if you plan to preserve any of the crop.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.