Frost-Free at Last, Minnesota Gardeners!
It’s official—the average last frost date has come and gone, and we’re heading into prime planting season! For most of Minnesota, the final spring frost typically falls between May 6–11, and now that we’ve cleared that window, it’s time to get growing.
But before you head straight for the tomatoes and basil, let’s talk about what the last frost date actually means—and why it’s such an important milestone for gardeners.
What Is the Last Frost Date?
The last frost date marks the average last day in spring when temperatures dip to 32°F or below. In Minnesota, that chilly window usually ends in early to mid-May.
This date is based on historical climate data and serves as a general planting guide. While we’ve passed the average date, it’s always smart to keep an eye on the forecast—Mother Nature has a mind of her own!
Why Gardeners Should Care
- Warm-Weather Plants, Rejoice: Now that we’re frost-free, it’s officially safe to plant warm-season vegetables and annuals like tomatoes, peppers, cucumbers, zinnias, and basil without fear of frost damage.
- Cool-Weather Crops Still Thrive: If you haven’t yet planted lettuce, peas, radishes, spinach, or cabbage, go for it! These hardy crops can still thrive even as the weather warms up.
- Plan with Confidence: Knowing you’re beyond the frost date means fewer surprises, less risk of replanting, and a better chance of garden success from the start.
Sunnyside Tips for Post-Frost Planting
- Harden Off Seedlings: If you’ve been growing plants indoors, transition them slowly outside to help them adjust to full sun and wind.
- Mulch for Moisture: Add mulch around your plants to help retain soil moisture and regulate temperature as the season warms up.
- Feed & Water: Give your plants a strong start with compost or starter fertilizer, and keep them watered consistently—especially right after planting.
Time to Dig In!
Now that the frost is behind us, the garden season is officially on. Whether you’re planting healthy veggies, stunning perennials, or pollinator-friendly natives, we’ve got everything you need to bring your outdoor space to life.
Stop into Sunnyside Gardens to shop healthy plants, organic soils, and expert-approved tools that’ll make this your best garden yet.
Follow us on social media and subscribe to our newsletters for even more Sunnyside!
