When to Plant Scallions in Tennessee (2026 Guide)
When considering when to plant scallions in Tennessee, understanding the local frost dates is critical for a successful harvest. For instance, in the state’s Zone 6b regions, the median last spring frost date is April 13, while the first fall frost typically occurs around October 22. This creates a frost-free growing season of approximately 192 days, which is perfect for growing this versatile crop.
Scallions, also known as green onions, thrive in cool weather and can be planted in succession every 3–4 weeks to guarantee a continuous harvest from late spring through the fall. With the ideal conditions present in Tennessee, especially in cities like Nashville and Memphis, gardeners can enjoy the benefits of scallions planted in both spring and fall. Each sowing yields a productive crop ready for harvest within 60–70 days from seeding.
Given Tennessee's varied climates, from the higher elevations to the warmer lowlands, timing and methods may vary. In many areas, you can expect flourishing scallions ready to be enjoyed by summer, especially if you follow recommended planting windows. Ensuring your planting aligns with local frost dates is essential to maximize your yield and enjoyment.
Planting Schedule by USDA Zone in Tennessee
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Start March 1 – March 15, ~6 weeks before April 13 | Transplant outdoors April 21 – April 28, after last frost | Direct sow April 21 – May 5, after last frost | Harvest late June through October, approximately 60–70 days after sowing |
| Zone 7a | Start February 15 – March 1, ~6 weeks before March 27 | Transplant outdoors April 1 – April 7, after last frost | Direct sow April 1 – April 15, after last frost | Harvest late May through November, approximately 60–70 days post sowing |
| Zone 6a | Start February 22 – March 8, ~6 weeks before April 18 | Transplant outdoors April 25 – May 2, after last frost | Direct sow April 25 – May 9, after last frost | Harvest late June through October, approximately 60–70 days after sowing |
Scallions Planting Windows in Tennessee
- Indoor start: In Tennessee, start indoors for scallions from late February to early March, depending on your zone.
- Transplant outdoors: For outdoor transplanting, the ideal window in Tennessee runs from late April to early May.
- Harvest: You can expect to harvest scallions from late June through October across Tennessee.
Common Mistakes Growing Scallions in Tennessee
- One common mistake in Tennessee is planting scallions too late in the spring. The state experiences unpredictable late frosts, particularly in higher elevations. This can lead to damage if seedlings are sown too close to the last frost date, so always check local forecasts.
- Tennessee's hot summers can lead to bolting in scallions if planted without considering the heat. Many gardeners forget that scallions thrive in cooler weather and try to grow them during the peak summer heat. It's better to stagger plantings accordingly and monitor soil moisture.
- Overcrowding is another pitfall for Tennessee gardeners — scallions can grow well in dense clusters but require adequate spacing for air circulation. Be cautious, as humid conditions in some parts of Tennessee can result in diseases if plants are too close together.
- Local soil conditions in Tennessee can also affect scallion growth. Many regions have clay or alkaline soils that may not drain well and can lead to poor growth. Incorporate compost and organic matter to amend your soil for better results with scallions.
- Some novice gardeners may overlook the importance of succession planting. Instead of sowing a large batch at once, making smaller, staggered plantings every few weeks helps maintain a steady supply of scallions throughout the growing season, especially in Tennessee with its varied climates.
Frequently Asked Questions
What if I'm in a cold pocket of Tennessee?
If you're in a colder area of Tennessee, adjust your planting dates accordingly. You might want to start seedlings indoors slightly earlier and transplant later to avoid frost damage. Utilize row covers to protect young plants during unexpected chilly nights.
Can I still plant scallions in May?
Yes, planting scallions in May is acceptable, especially in warmer zones like 7a. Just keep in mind that they may reach maturity later in the season due to the warmer temperatures. Ensure you manage water and nutrient levels well.
When should I consider harvesting scallions?
You can start harvesting scallions about 60–70 days after sowing. Check their size and color; you can harvest them as soon as they reach a desirable size, typically late June through October in Tennessee.
Is it worth planting scallions in containers?
Absolutely! Scallions thrive in containers, making them perfect for small spaces. Just ensure you use a deep enough pot and provide adequate drainage. Continuous harvest is achievable in pots by sowing in succession every few weeks.
Do scallions tolerate frost?
Yes, scallions can tolerate light frosts, down to around 28°F, with minimal damage. However, if temperatures drop below 25°F, consider covering them to protect your crop and prolong your harvest into late fall.
Keep Learning
City guides in Tennessee
Other crops in Tennessee
Typical fall sowing window for Scallions in Tennessee: August 9 – August 30.