When to Plant Scallions in Kansas (2026 Guide)
If you're looking to grow scallions in Kansas, knowing the right times to plant is crucial for successful harvests. Kansas experiences different frost dates depending on the USDA Hardiness Zone, with Zone 6b typically seeing its last spring frost around April 9, while Zone 6a follows a bit later on April 20. Understanding these dates will help you time your planting and ensure a healthy, productive crop of scallions.
Scallions can be planted nearly any time during the cool season, making them a favorite among home gardeners. These versatile crops require only 60-70 days from seed to harvest and allow for continuous production through succession sowing. In Kansas, plan to start your seeds in late winter to spring, avoiding any late frost damage while taking advantage of the warm weather.
Harvesting scallions is straightforward and usually occurs between June and October, depending on your planting dates and frost zone. With the first fall frost arriving around October 14 in Zone 6a and October 26 in Zone 6b, make sure to keep tabs on the weather and cover your scallions with row cover when temperatures drop. This will extend your harvest time and allow you to enjoy fresh scallions throughout the season.
Planting Schedule by USDA Zone in Kansas
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6b | Start February 15 – March 1, ~6–8 weeks before April 9 | Transplant outdoors from April 10 – May 1 | Direct sow from April 10 – July 31 | Harvest from June 1 – October 26 |
| Zone 6a | Start February 15 – March 1, ~6–8 weeks before April 20 | Transplant outdoors from April 21 – May 1 | Direct sow from April 21 – July 15 | Harvest from June 1 – October 14 |
Scallions Planting Windows in Kansas
- Indoor start: For scallions, start seeds indoors from February 15 – March 1 to ensure a successful crop.
- Transplant outdoors: Transplant scallions outdoors from April 10 – May 1 for Zone 6b and April 21 – May 1 for Zone 6a.
- Harvest: Harvest scallions between June 1 – October 14 in Zone 6a and June 1 – October 26 in Zone 6b.
Common Mistakes Growing Scallions in Kansas
- Many gardeners in Kansas overlook the importance of the last frost date, which can lead to planting too early. For scallions, it's vital to wait until at least April 9 in Zone 6b or April 20 in Zone 6a before transplanting outdoors to avoid frost damage.
- Underestimating the Kansas heat can also be a mistake; while scallions can tolerate some warming temperatures, prolonged exposure to high heat can stress the plants. Consider shading your containers during peak summer days if you notice wilting.
- A common mistake made by newcomers to gardening in Kansas is neglecting to cover scallions with row covers in late fall. When temperatures drop below 25°F, a layer of protection can significantly extend harvest time and keep your plants productive even in cooler weather.
- Kansas soil can vary widely; some areas have heavy clay or high alkalinity, which may not be conducive to growing scallions. Periodically amend your soil with organic matter to create a well-drained, nutrient-rich environment for optimal growth.
- Ignoring the staggered planting technique is another frequent error. Planting all your scallions at once may result in a large glut during the harvest, whereas sowing every 3–4 weeks helps you enjoy a continuous supply over the summer months.
Frequently Asked Questions
What if I'm in a cold pocket of Kansas?
If you're in a colder area of Kansas, like higher elevations, you might need to adjust your planting dates. Consider starting seeds indoors earlier and transplanting out when the danger of frost has passed in your specific area.
Can I still plant scallions in May?
Yes, you can still plant scallions in May, especially if you're in Zone 6b. However, planting later means you might miss the optimal window for seed-to-harvest time, so it's best to plant as early as possible.
How deep should I plant scallion seeds?
Scallion seeds should be planted about ¼ to ½ inch deep. This depth allows them to germinate effectively while also preventing birds and other pests from easily accessing them.
Can scallions survive a light frost?
Yes, scallions can tolerate light frosts; they can handle temperatures down to 28°F without major damage. Make sure to cover them if a hard freeze is expected to preserve your crop.
How often should I water my scallions?
Scallions prefer consistently moist soil but avoid overwatering. A regular watering schedule fits well, aiming to keep the soil damp without causing it to become soggy, especially during the hottest months in Kansas.
Keep Learning
City guides in Kansas
Other crops in Kansas
Typical fall sowing window for Scallions in Kansas: August 14 – September 4.