The USDA Zone info is a great tool for gardeners to help us determine 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.

The first chance to plant snow peas in Lewistown can be determined by referring to the USDA zone info.

Planting Calendar for Snow peas

Frost tolerance for snow peas:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Snow peas are very cold tolerant which means that you can plant them a quite a bit earlier than plants that are more sensitive to the cold.

The earliest that you can plant snow peas in Lewistown 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 snow peas and expect a good harvest is probably August. You probably don't want to wait any later than that or else your snow peas may not have a chance to really do well. You can get started a little bit earlier by starting your snow peas indoors.

Last Frost Date

On average the last frost is on May 15 in Lewistown. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Lewistown may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Lewistown there is a last frost after May 15 be ready to protect your snow peas if you have a late frost.

USDA Zone Info for Lewistown

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 Lewistown

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