When to Plant Cilantro in Minnesota (2026 Guide)
Cilantro is a unique herb that adds vibrant flavor to many culinary dishes. In Minnesota, knowing the right planting times is essential, especially given the state's varying climate across zones. For example, the last spring frost in Zone 6a typically occurs on April 30, while in Zone 5b, you can expect it around May 4, emphasizing the importance of tailored gardening strategies.
Cilantro thrives in cooler weather, making it a perfect candidate for early planting in Minnesota. However, gardeners need to watch for the first fall frost, which occurs as early as September 29 in Zone 5b and October 5 in Zone 6a. With a limited frost-free season, careful planning ensures a successful cilantro harvest.
To optimize your yield, understanding the nuances of your specific hardiness zone is crucial. Whether you are in Minneapolis, Rochester, or Duluth, the right timing will dictate your success. Frequent succession planting will help maintain a steady supply of cilantro throughout the growing season.
Planting Schedule by USDA Zone in Minnesota
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 6a | Not recommended — direct sow only | Not recommended — direct sow only | Start March 15 – April 10, ~2–6 weeks before April 30 | Harvest from June 1 – July 15, ~6–10 weeks post sowing |
| Zone 5b | Not recommended — direct sow only | Not recommended — direct sow only | Start March 15 – April 15, ~2–5 weeks before May 4 | Harvest from June 1 – July 10, ~6–8 weeks post sowing |
| Zone 5a | Not recommended — direct sow only | Not recommended — direct sow only | Start April 1 – April 15, ~1–3 weeks before May 17 | Harvest from June 1 – July 5, ~6–8 weeks post sowing |
Cilantro Planting Windows in Minnesota
- Indoor start: Indoor starting for cilantro is not recommended as planting should occur directly outdoors.
- Transplant outdoors: Transplanting cilantro outdoors is also not recommended; rather, direct sowing should occur as early as March 15.
- Harvest: In Minnesota, cilantro can be harvested typically from June 1 through July 15, depending on the period of sowing and local frost dates.
Common Mistakes Growing Cilantro in Minnesota
- One common mistake gardeners in Minnesota make is starting cilantro indoors. Because it's a taproot plant, cilantro does not tolerate transplanting well. Sowing seeds directly into the ground maximizes growth potential and flavor quality.
- Improper timing is a hurdle for many Minnesota gardeners. Planting cilantro too late in the season can lead to stress from rising temperatures, increasing the chances of the plant bolting early, which results in less harvestable leaves.
- Starting cilantro after the last frost date can be detrimental. It's crucial, especially in Minnesota's varying climates, to adhere to sowing windows. Waiting too long can result in diminished yield and flavor, particularly as the weather warms.
- Using standard varieties of cilantro in Minnesota's warmer months can lead to disappointing results. Opt for slow-bolting varieties such as 'Santo' to enjoy an extended harvest. These varieties better withstand the hotter conditions when planted during late spring.
- Ignoring the need for succession planting is a mistake too often made. Planting cilantro every few weeks instead of all at once ensures a steady supply. This is particularly important in Minnesota, where heat can quickly push plants to bolt.
Frequently Asked Questions
What if I'm in a cold pocket of Minnesota?
If you're located in a colder area, it's essential to understand your specific microclimate. You may want to start sowing cilantro as soon as the ground is workable in early spring or wait a little longer if frost is a concern.
Can I still plant cilantro in May?
Yes, but timing is crucial! If you are in Zone 5a, you’ll want to plant early in May just after the last frost. In contrast, those in Zone 5b should aim for planting as late as mid-May.
How often should I succession plant cilantro?
For optimal harvests, aim to plant cilantro every 2–3 weeks during the cooler seasons. This approach allows for a continuous supply of fresh cilantro and prevents having too many plants mature at once.
How can I prevent cilantro from bolting too soon?
Choose slow-bolting varieties and ensure proper watering to keep the soil consistently moist. Planting in partial shade during hotter months can also help delay bolting and prolong your harvest.
What should I do if my cilantro bolts?
If your cilantro bolts, don’t pull it out! Let the flowers attract beneficial insects, and once the seeds form, they will drop and potentially grow next season. Embrace this as an opportunity for next year's garden!
Keep Learning
City guides in Minnesota
Other crops in Minnesota
Typical fall sowing window for Cilantro in Minnesota: July 16 – August 6.