When to Plant Scallions in Vermont (2026 Guide)

When considering when to plant scallions in Vermont, it’s essential to understand the local climate and frost dates. In Burlington, the median last spring frost occurs on May 8, while the first fall frost generally falls around October 3. These dates dictate the best times for planting and harvesting scallions, ensuring a fruitful gardening season.

Scallions are a fantastic choice for local gardens due to their versatility and fast growth, requiring just 60–70 days from seed to harvest. Planting them in successive batches every 3–4 weeks allows for a continuous supply, making them an excellent crop for both novice and experienced gardeners. In Vermont’s unique climate, the ability to thrive in cool conditions while tolerating some heat further enhances their growing appeal.

By understanding the local growing conditions in Vermont, gardeners can maximize their scallion harvest while minimizing common pitfalls. These techniques will help you get the most out of your garden space. Whether you're utilizing tightly packed plantings or considering companion planting strategies, knowing how to effectively grow scallions will lead to bountiful yields throughout the season.

Planting Schedule by USDA Zone in Vermont

Zone	Indoor start	Transplant out	Direct sow	Harvest
Zone 5b	Start February 15 – March 1, ~6–8 weeks before May 8	Transplant outdoors after May 8, when frost is mostly gone	Direct sow from May 8 – September 1 for multiple harvests	Harvest from June 15 – October 3, before first frost

Scallions Planting Windows in Vermont

Indoor start: Start your scallion seeds indoors from February 15 to March 1 for the best results in Vermont.
Transplant outdoors: You can transplant scallions outdoors beginning shortly after the last frost date of May 8.
Harvest: Expect to start harvesting your scallions from June 15 through to the first fall frost on October 3.

Common Mistakes Growing Scallions in Vermont

One common mistake in Vermont is not accounting for late spring snows that can arrive even after the last frost date of May 8. It’s essential to monitor weather forecasts closely to protect your plants during unexpected cold spells.
Overcrowding scallions is another mistake many gardeners make. While they can be planted densely, ensure adequate space for air circulation to prevent disease. Vermont's humid summer can foster mold if plants are too close together.
Ignoring soil conditions is a problem in Vermont, particularly with heavy clay soils. Amending your soil with organic matter can significantly enhance drainage and ensure that scallions thrive throughout their growth period.
Some gardeners mistakenly treat scallions like bulb onions, planting them based on length of daylight. However, scallions can be planted during almost any cool season period, giving them a wider window for planting than other onion varieties that may not adapt as well to variable Vermont conditions.
Not utilizing succession planting can lead to gluts or gaps in your harvest. Instead of planting all at once, stagger sowings every 3-4 weeks to ensure a steady supply of scallions throughout the growing season without overwhelming yourself with too many at one time.

Frequently Asked Questions

What if I'm in a cold pocket of Vermont?

If your garden is in a cooler area of Vermont, consider planting scallions earlier indoors and then transplanting them outside after the last frost. This will give them a head start and ensure a good harvest despite the cooler temperatures.

Can I still plant scallions in May?

Yes, you can still plant scallions in May! Just ensure to direct sow after May 8, when the danger of frost has passed. This timing allows you to enjoy a bountiful harvest before the fall frost arrives.

How do I know when to harvest my scallions?

Scallions are typically ready for harvest about 60–70 days after sowing. Check for green tops that are approximately 6 inches tall and gently pull one out as a test; if it’s the desired size, it’s time to harvest!

Will frost damage my scallions?

Light frost can actually improve scallion flavor, but hard frost may damage them. To protect your scallions in late fall, cover them with a row cover when temperatures are expected to drop below 25°F.

Can I grow scallions in containers?

Absolutely! Scallions thrive in containers. Just use a 6-inch deep pot filled with rich potting mix and ensure they get plenty of sunlight. This method allows you to easily manage their growth and move them as needed.