One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Ironwood you can determine when to plant field peas by using the USDA zone info.

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 are one of those plants that can tolerate a little bit of cold weather which tells us that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant field peas in Ironwood 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. Any later than that and your field peas may not have a chance to fully mature. Starting your field peas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Ironwood. You can expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Ironwood may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Ironwood there is a last frost after May 15 be ready to cover your field peas if you have a surprise late frost.

USDA Zone Info for Ironwood

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 Ironwood

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