When to Plant Beets in Arizona (2026 Guide)
Growing beets in Arizona is a rewarding endeavor that can yield delicious roots and nutritious greens. With frost dates varying across the state, it's important to know when to plant in your specific zone. For those in Zone 8b-9a, the last spring frost typically occurs around February 8, giving you ample time for a healthy beet crop.
Understanding your hardiness zone can greatly influence your gardening success. If you're in Zone 7b-8a, expect the last frost around February 16, while those in Zone 5b should be prepared for a later spring, with frost lasting until May 4. Each of these zones offers its own unique growing conditions, making it crucial to plan accordingly.
Beets thrive in the cooler temperatures of spring and fall, making them perfect for Arizona's unique climate. In fact, fall-grown beets are often sweeter due to the cooler temperatures. Make sure to keep moisture consistent during the growing season to produce those perfectly shaped, flavorful roots that beets are known for.
Planting Schedule by USDA Zone in Arizona
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 8b–9a | Not recommended — direct sow only | Not recommended — direct sow only | Start February 15 – March 1, ~6–8 weeks before April 10 | Harvest June 10 – June 30, ~50-70 days after planting |
| Zone 7b–8a | Not recommended — direct sow only | Not recommended — direct sow only | Start February 22 – March 8, ~6–8 weeks before April 10 | Harvest June 1 – June 20, ~50-70 days after planting |
| Zone 5b | Not recommended — direct sow only | Not recommended — direct sow only | Start May 10 – May 20, ~6–8 weeks before June 15 | Harvest September 15 – October 5, ~50-70 days after planting |
Beets Planting Windows in Arizona
- Indoor start: Beets should not be started indoors in Arizona, as they do not transplant well and are best sown directly into the garden.
- Transplant outdoors: Transplanting beets outdoors is not recommended; they should be directly sown to ensure proper growth and development.
- Harvest: Beets can be harvested about 50-70 days after planting, depending on the time of year and specific variety, with optimal harvesting occurring from June to October.
Common Mistakes Growing Beets in Arizona
- Many Arizona gardeners underestimate how well beets can tolerate cool weather, sometimes planting too late in the season. This can result in smaller roots and less flavorful greens. It's essential to plant them early enough to take advantage of the optimal growing conditions.
- Failing to thin beet seedlings is another common mistake. As each seed cluster produces multiple seedlings, overcrowding can lead to underdeveloped roots. Be sure to thin them to 3-4 inches apart once they reach 2 inches tall for the best harvest.
- In Arizona, not accounting for the high summer heat can lead to an unexpected end to your beet crop. While beets can grow in warmer climates, extreme summer temperatures can affect their flavor and growth, so planting in spring or fall is best.
- Beet greens are often overlooked in favor of the roots, but many Arizona gardeners miss the opportunity to harvest delicious greens. Regularly picking the leaves encourages more growth and ensures you maximize your beet harvest throughout the growing season.
- Some gardeners in Arizona mistakenly believe that beets can be successfully grown after spinach or chard in the same bed. However, doing so can increase the risk of downy mildew due to a buildup of pathogens, so it's best to rotate your crops properly.
Frequently Asked Questions
What if I'm in a cold pocket of Arizona?
If you're located in a cold pocket, be mindful of the last frost dates in your area which could be later than February 8. Adjust your planting times accordingly to ensure successful beet growth.
Can I still plant beets in May?
In Zone 5b, it is ideal to plant beets in early May. However, be sure to monitor the weather closely as soil temperatures should ideally be around 40°F for successful germination.
Are beets frost tolerant?
Yes, beets are quite frost tolerant. They can withstand light frosts, which makes them an excellent option for early spring or late fall planting in many regions of Arizona.
How far apart should I plant beets?
When direct sowing beets, ensure that you thin the seedlings to 3-4 inches apart once they reach about 2 inches tall. This spacing helps prevent overcrowding and promotes healthy root development.
What should I do if my beets are not growing well?
If your beets are struggling, check for proper moisture levels in the soil and ensure they are not competing with other plants for nutrients. Consistent watering and adequate sunlight are crucial for growing nutritious beets.
Keep Learning
City guides in Arizona
Other crops in Arizona
Typical fall sowing window for Beets in Arizona: September 9 – September 30.