The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of figuring out when you can plant field peas is to refer to the USDA zone info for Havre.

Planting Calendar for Field Peas

Frost tolerance for field peas:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Field Peas tend to make it in mild cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant field peas in Havre is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant field peas and expect a good harvest is probably August. If you wait any later than that and your field peas may not have a chance to grow to maturity. Starting your field peas indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Havre. In the coldest months of winter you should expect an average low temperature of -30°F.

Always keep in mind that USDA zone info for Havre is not always accurate and the actual date of last frost changes from year to year. Half of the time in Havre last frost occurs after May 15 so always be ready to protect your field peas if you have one of those late frosts.

USDA Zone Info for Havre

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Havre

You may be interested in your other planting guides for Havre.