When to Plant Peas in Utah (2026 Guide)
Knowing the right time to plant peas in Utah is crucial for a successful harvest. Depending on your location, the last spring frost can range from April 27 to May 19. For example, in Zone 6a, the median last spring frost date is April 27, while in Zone 5b, it's May 11. Understanding these dates will help you choose the best planting window for your peas.
Peas are cool-season vegetables that thrive in cooler temperatures, making them one of the first crops you can plant in the garden. They require soil temperatures between 40 to 50°F for germination, so it's important to prepare your garden early in the season. In Utah, the frost-free growing season can vary from around 135 to 174 days, so timing is everything.
When planting peas, direct sowing is recommended as they do not respond well to transplanting. Be sure to consider the local climate, which can vary dramatically across Utah. For example, the harvest timings will differ, where in Zone 5b, you can expect to harvest around late June to early July, while in Zone 6a, your harvest may start in mid-June.
Planting Schedule by USDA Zone in Utah
| Zone | Indoor start | Transplant out | Direct sow | Harvest |
|---|---|---|---|---|
| Zone 5b | Not recommended — direct sow only | Not recommended — direct sow only | Start March 5 – March 20, ~6–8 weeks before May 11 | Harvest approximately June 20 – July 5 |
| Zone 6a | Not recommended — direct sow only | Not recommended — direct sow only | Start March 15 – March 30, ~6–8 weeks before April 27 | Harvest approximately June 10 – June 25 |
| Zone 5a | Not recommended — direct sow only | Not recommended — direct sow only | Start March 20 – April 5, ~6–8 weeks before May 19 | Harvest approximately June 25 – July 10 |
Peas Planting Windows in Utah
- Indoor start: Not applicable — peas should not be started indoors in any zone.
- Transplant outdoors: Not applicable — peas should not be transplanted outdoors in any zone.
- Harvest: In Zone 5b, harvest occurs from June 20 to July 5, while in Zone 6a, it takes place from June 10 to June 25, and in Zone 5a, harvest is expected from June 25 to July 10.
Common Mistakes Growing Peas in Utah
- One common mistake in Utah is planting peas too late in the season. With the potential for a short growing season, it's essential to get peas in the ground early enough to mature before summer heat arrives.
- New gardeners in Utah often overlook the specific soil temperature requirements for peas. It's important to ensure soil temperatures reach at least 40°F before planting seeds, as cool soil can hinder germination.
- Another frequent issue is improper watering. Utah's dry climate can lead to quick soil moisture loss; regular watering is essential to keep the soil consistently moist for pea plants.
- Many gardeners make the mistake of not using trellises for climbing varieties of peas. Without adequate support, vines can sprawl on the ground, leading to reduced air circulation and increased disease risk.
- Lastly, attempting to transplant peas is a common error. Peas grow best when direct-sown, as they do not tolerate root disturbance well and may fail to thrive if transplanted.
Frequently Asked Questions
What if I'm in a cold pocket of Utah?
If you're in a colder microclimate, you might experience frost later in the season. Adjust your planting time accordingly, ensuring to wait until the risk of frost has passed to avoid damage to your pea plants.
Can I still plant peas in May?
You can plant peas in May if you're in a warmer zone like Zone 6a, but keep in mind that in Zone 5b or 5a, late planting may hinder your harvest since the weather can become too warm for optimal growth.
How often should I water my pea plants?
Pea plants thrive in consistently moist soil. It's best to water them deeply once or twice a week, depending on the weather conditions and local humidity levels in Utah.
Should I fertilize my peas?
Fertilization isn’t usually necessary for peas, as they naturally fix nitrogen in the soil. However, if your soil is particularly poor, you can add some organic compost to give your plants a boost.
What pests should I watch for with peas?
Common pests include aphids and pea weevils, which can harm your crop. Regularly inspect plants and consider introducing beneficial insects or organic treatments to manage any infestations effectively.
Keep Learning
City guides in Utah
Other crops in Utah
Typical fall sowing window for Peas in Utah: July 17 – August 7.