When to Plant Collard Greens in Vermont (2026 Guide)
Collard greens are a fantastic addition to any Vermont garden, providing nutritious leaves that improve in flavor after frost. In Vermont, particularly in Zone 5b, you can expect your last spring frost around May 8 and your first fall frost by October 3. This means you have a roughly 148-day frost-free season to cultivate these hardy greens, perfect for enjoying both spring and fall harvests.
Known for their resilience, collards thrive in the cooler temperatures and can actually yield more flavorful leaves after exposure to frost. This makes them particularly advantageous for Vermont gardeners who might worry about unseasonable chills. With the right care, collard greens can be harvested from spring through fall, providing delicious, leafy greens throughout much of Vermont's growing season.
Planting collard greens strategically within this frost-free window is essential to unlocking their full potential. Understanding when to start indoors, transplant outdoors, and sow directly into the ground can make a significant difference to your overall yield. Follow our guide to planting collard greens in Vermont, making the most of those precious growing days before the onset of frost.
Planting Schedule by USDA Zone in Vermont
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 5b | Start March 1 – March 15, ~6–8 weeks before May 8 | Transplant outdoors May 15 – June 1, after the last frost | Direct sow May 15 – July 1, after all threat of frost | Harvest from late June through October 3 |
Collard Greens Planting Windows in Vermont
- Indoor start: Start your collard greens indoors between March 1 and March 15 to ensure a successful transplant after the last frost.
- Transplant outdoors: Transplant your collard greens outdoors from May 15 to June 1, ensuring they're safely beyond the last frost date.
- Harvest: You can begin harvesting collard greens from late June and continue until the first fall frost on October 3.
Common Mistakes Growing Collard Greens in Vermont
- One common mistake Vermont gardeners make is planting collard greens too early in the spring. Given the risk of lingering cold and the final frost date of May 8, it's essential to wait to transplant outdoors until well after this date to prevent stunted growth or plant loss.
- Many new gardeners in Vermont underestimate the importance of soil quality when growing collard greens. Heavy clay soils can hinder root growth, while fertile, well-draining soils significantly enhance the productivity of your collard crop.
- Another mistake often made is overlooking pest control. Aphids can become a significant issue for collard greens in Vermont, especially in early spring and late summer when conditions are favorable for reproduction. Regular checks and preventative measures can save your crop.
- Some gardeners mistakenly believe that collards can thrive without shade in the heat of August in Vermont. This can lead to bolting and reduced yield. Consider positioning them near taller crops to ensure they receive adequate protection from the intense afternoon sun.
- Lastly, failing to properly stagger your plantings can lead to either gluts or gaps in production. Consider planting collard greens in succession every few weeks to ensure a steady harvest, taking advantage of Vermont's unique climate and frost dates.
Frequently Asked Questions
What if I'm in a cold pocket of Vermont?
If you're in a colder area, consider starting collard greens indoors even earlier or using row covers when transplanting. These methods can help mitigate what may be a short growing window and prevent frost damage.
Can I still plant collard greens in May?
Yes, as long as the last frost date of May 8 has passed, you can start transplanting collard greens outdoors in mid-May. Just ensure that they are well-acclimatized to outdoor conditions beforehand.
How long do collard greens take to mature?
Typically, collard greens will mature in about 60 to 80 days after transplanting. Depending on your planting time, this allows for a generous harvest before the first fall frost of October 3.
Do collard greens need a lot of sunlight?
Collard greens thrive best in full sun but can tolerate partial shade, especially in warmer months. They benefit from some shading during peak heat to prevent bolting and maintain flavor.
How often should I water collard greens?
Collard greens prefer consistent moisture, so it's best to check the soil regularly. Aim to keep the soil evenly moist but avoid waterlogging, which can damage the roots. Regular watering is vital, especially during hot, dry spells.
Keep Learning
City guides in Vermont
Other crops in Vermont
Typical fall sowing window for Collard Greens in Vermont: July 21 – August 11.