Washington’s cool, wet springs mean beets go in the ground from late March to early April. Knowing the best time to plant beets in washington is key to a sweet, tender harvest. Beets thrive in the state’s mild spring and fall temperatures, but timing varies by region and elevation. This guide covers everything you need for a successful beet crop, from soil prep to harvest.
Beets are a cool-season crop. They grow best when temperatures are between 50°F and 70°F. In Washington, that means two main planting windows: early spring for a summer harvest, and late summer for a fall harvest. The exact dates depend on your location—coastal, inland, or mountainous.
Let’s break down the timing for each region. You’ll also learn how to prepare your soil, plant seeds, and care for your beets. We’ll include tips for extending your harvest and avoiding common problems.
Understanding Washington’s Growing Zones
Washington spans USDA hardiness zones 4 through 9. The western side, including Seattle and the coast, has mild winters and cool summers. Eastern Washington, like Spokane and the Tri-Cities, experiences hotter summers and colder winters. Mountain areas, such as the Cascades, have shorter growing seasons.
Your specific zone affects the best time to plant beets in washington. Coastal gardeners can plant earlier in spring and later in fall. Inland gardeners need to adjust for heat and frost dates. Always check your local frost dates before planting.
Coastal Washington (Zones 8-9)
In coastal areas, spring comes early. You can plant beets as soon as the soil is workable, usually by mid-March. The soil temperature should be at least 40°F. For a fall crop, plant in late July to mid-August. The mild fall allows for a longer growing season.
Beets planted in spring will be ready by June. Fall-planted beets can be harvested into November. Mulch them to protect from light frosts. Coastal gardeners often get two full crops per year.
Inland Washington (Zones 5-7)
Inland areas have hotter summers. Plant spring beets in early April, after the last frost. The soil warms up faster here. For a fall crop, plant in late July to early August. This timing avoids the peak summer heat, which can make beets woody.
Spring-planted beets are ready by late June. Fall beets can be harvested in October. Inland gardeners may need to water more frequently during dry spells. Shade cloth can help if temperatures spike.
Mountain Areas (Zones 4-5)
Mountain gardeners have a short growing season. Plant beets in late April to early May, after the soil thaws. The soil temperature may be slow to warm. Use black plastic to warm the soil. For a fall crop, plant in early July. This gives beets enough time to mature before the first frost.
Spring beets are ready by July. Fall beets can be harvested in September. Choose fast-maturing varieties like ‘Early Wonder’ or ‘Detroit Dark Red’. These varieties need only 50-60 days to mature.
Best Time To Plant Beets In Washington
Now let’s get specific. The best time to plant beets in washington depends on your goal. For a spring harvest, plant 2-4 weeks before the last frost. For a fall harvest, plant 8-10 weeks before the first frost. Here’s a simple timeline:
- Coastal spring: March 15 – April 1
- Coastal fall: July 20 – August 10
- Inland spring: April 1 – April 15
- Inland fall: July 25 – August 5
- Mountain spring: April 20 – May 10
- Mountain fall: July 1 – July 15
These dates are guidelines. Always check your local frost dates. You can find them from your county extension office or online. Soil temperature is more important than air temperature. Beets germinate best when soil is 50-85°F.
Checking Soil Temperature
Use a soil thermometer to check. Insert it 2-3 inches deep. Take readings in the morning for accuracy. If the soil is below 40°F, wait. Cold soil can cause poor germination. If it’s above 85°F, wait for cooler weather. Beets prefer consistent temperatures.
You can warm soil with black plastic or row covers. Remove them after germination. This helps in cooler spring weather. In fall, use shade cloth to cool the soil if needed.
Succession Planting For Continuous Harvest
Plant a new batch of seeds every 2-3 weeks. This gives you a steady supply of tender beets. Stop planting 8 weeks before the first frost. Succession planting works well in all regions. Just adjust the timing based on your zone.
For example, in coastal areas, plant every 2 weeks from March to August. In inland areas, plant every 3 weeks from April to July. In mountain areas, plant every 2 weeks from May to July. This method maximizes your harvest.
Preparing Your Soil For Beets
Beets need loose, well-draining soil. Heavy clay or rocky soil can cause misshapen roots. Test your soil pH. Beets prefer a pH of 6.0-7.0. Add lime if needed to raise pH. Add sulfur to lower it.
Remove rocks and debris from the planting area. Till the soil to a depth of 8-10 inches. Mix in 2-3 inches of compost or aged manure. This improves drainage and adds nutrients. Avoid fresh manure, which can burn roots.
Fertilizing For Best Growth
Beets are heavy feeders. Use a balanced fertilizer like 10-10-10. Apply 1-2 pounds per 100 square feet. Mix it into the soil before planting. Avoid high-nitrogen fertilizers, which cause leafy growth at the expense of roots.
Side-dress with compost or a low-nitrogen fertilizer mid-season. This gives beets a boost. Water after fertilizing to help nutrients reach the roots. Over-fertilizing can cause forked or hairy roots.
Soil Amendments For Washington Gardens
Washington soils vary widely. Coastal soils are often acidic and sandy. Add lime and compost to improve them. Inland soils may be alkaline and clay-rich. Add organic matter to improve drainage. Mountain soils are often rocky and thin. Build raised beds for better results.
Conduct a soil test every 2-3 years. This tells you exactly what your soil needs. Your local extension office can help. Adjust amendments based on results.
Planting Beet Seeds Step By Step
Beet seeds are actually clusters of 2-5 seeds. Soak them in water for 12-24 hours before planting. This speeds up germination. Plant seeds 1/2 inch deep and 1-2 inches apart. Space rows 12-18 inches apart.
Cover seeds with fine soil. Water gently to avoid washing them away. Keep the soil consistently moist until germination. This takes 5-10 days, depending on temperature. Thin seedlings to 3-4 inches apart when they are 2-3 inches tall.
Thinning For Healthy Roots
Thinning is critical. Crowded beets produce small, misshapen roots. Use scissors to snip off extra seedlings. Pulling them can disturb nearby roots. Thin to one plant every 3-4 inches. This gives each beet room to grow.
You can eat the thinnings. They are delicious in salads. Just wash them well. Thinning also improves air circulation, reducing disease risk.
Watering And Mulching
Beets need consistent moisture. Water 1-2 inches per week. More in hot weather. Less in cool weather. Use a soaker hose or drip irrigation to avoid wetting leaves. Wet leaves can lead to fungal diseases.
Mulch with straw, grass clippings, or shredded leaves. Mulch keeps soil cool and moist. It also suppresses weeds. Apply a 2-3 inch layer after seedlings are established. Replenish as needed.
Caring For Your Beet Plants
Beets are relatively low-maintenance. But they need regular care for best results. Weed regularly to reduce competition. Beets have shallow roots, so hand-pull weeds near the plants. Use a hoe carefully between rows.
Fertilize lightly every 3-4 weeks. Use a liquid fertilizer like fish emulsion. This provides quick nutrients. Stop fertilizing 2 weeks before harvest. This prevents overly large, woody roots.
Pest And Disease Management
Common pests include aphids, leaf miners, and flea beetles. Use insecticidal soap or neem oil for control. Row covers can prevent pests from reaching plants. Rotate crops yearly to reduce soil-borne diseases.
Diseases like Cercospora leaf spot and scab can occur. Avoid overhead watering. Remove infected leaves promptly. Plant disease-resistant varieties like ‘Red Ace’ or ‘Merlin’. Good air circulation helps prevent problems.
Dealing With Bolting
Bolting is when beets flower and go to seed. This makes roots tough and inedible. Bolting is caused by stress, like heat or drought. Plant at the right time to avoid heat. Water consistently. Choose bolt-resistant varieties like ‘Boltardy’.
If bolting occurs, harvest immediately. The roots may still be edible if small. Otherwise, let them go to seed for next year. Bolting is more common in inland areas during summer.
Harvesting Beets At The Right Time
Beets are ready to harvest when roots are 1-3 inches in diameter. This takes 50-70 days, depending on variety. Check the base of the stem. If it’s 1-2 inches wide, the beet is likely ready. Gently pull one to check.
Harvest in the morning for best flavor. Use a garden fork to loosen the soil. Pull beets by the tops, not the roots. Remove the tops immediately to prevent moisture loss. Leave 1-2 inches of stem to avoid bleeding.
Storing Fresh Beets
Store beets in the refrigerator for 2-3 weeks. Remove tops and store separately. Tops last 3-5 days. For long-term storage, cure beets in a cool, dark place for 1-2 weeks. Then store in a root cellar or basement.
Beets can also be canned, pickled, or frozen. Freeze them after blanching for 3-5 minutes. Pickled beets last months in the fridge. Canning requires a pressure canner for safety.
Extending The Harvest Season
Plant multiple varieties with different maturity dates. ‘Early Wonder’ matures in 50 days. ‘Detroit Dark Red’ takes 60 days. ‘Lutz Green Leaf’ takes 70 days. This gives you a longer harvest window.
Use row covers to protect from light frosts. Beets can survive temperatures down to 20°F. Mulch heavily for winter storage. In mild coastal areas, you can harvest beets all winter.
Common Mistakes And How To Avoid Them
Many gardeners make simple mistakes with beets. Here are the most common ones and solutions:
- Planting too early in cold soil: Wait until soil is at least 40°F.
- Not thinning seedlings: Thin to 3-4 inches apart for proper root development.
- Over-fertilizing with nitrogen: Use balanced fertilizer to avoid leafy growth.
- Inconsistent watering: Keep soil evenly moist to prevent cracking.
- Planting in shade: Beets need full sun for best growth.
Avoid these mistakes for a better harvest. Learn from experience. Keep a garden journal to track what works in your area.
Choosing The Right Beet Varieties
Some varieties perform better in Washington’s climate. Here are top choices:
- ‘Detroit Dark Red’: Classic, reliable, good for all regions.
- ‘Early Wonder’: Fast-maturing, great for short seasons.
- ‘Golden Beet’: Sweet, mild flavor, doesn’t bleed.
- ‘Chioggia’: Italian heirloom with red and white rings.
- ‘Bull’s Blood’: Deep red leaves, good for salads.
Experiment with different varieties. Each has unique flavor and color. Grow what you enjoy eating. Local nurseries often carry varieties suited to your area.
Frequently Asked Questions
What is the best month to plant beets in Washington?
For most of Washington, April is the best month for spring planting. Coastal areas can start in March. Inland areas may wait until early April. For fall planting, August is ideal.
Can I plant beets in the fall in Washington?
Yes, fall planting works well. Plant 8-10 weeks before the first frost. In coastal areas, plant in late July to mid-August. Inland areas, plant in early August. Mountain areas, plant in early July.
How long do beets take to grow in Washington?
Most varieties take 50-70 days from seed to harvest. Fast-maturing types like ‘Early Wonder’ take 50 days. Slower types like ‘Lutz Green Leaf’ take 70 days. Weather can affect growth speed.
Should I soak beet seeds before planting?
Soaking seeds for 12-24 hours speeds up germination. It softens the seed coat. This is especially helpful in cool Washington springs. Drain and plant immediately after soaking.
Can I grow beets in containers in Washington?
Yes, beets grow well in containers. Use a pot at least 12 inches deep. Fill with loose, well-draining soil. Water frequently as containers dry out faster. Choose compact varieties like ‘Baby Ball’.
Final Tips For Success
Start small if you’re new to growing beets. Plant a short row first. Learn how they grow in your garden. Expand next year. Beets are forgiving and rewarding.
Keep records of planting dates, weather, and harvest times. This helps you refine your timing each year. Share tips with local gardeners. They know your specific conditions best.
Remember, the best time to plant beets in washington is a range, not a fixed date. Watch your soil temperature and weather. Adjust as needed. With proper timing and care, you’ll enjoy fresh, homegrown beets from spring through fall.
Happy gardening in Washington! Your beets will thank you for the attention to timing and soil prep. Enjoy the sweet, earthy flavor of your harvest.