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 best time to plant pea in Zone 4b should be estimated by checking out the USDA zone info.

Planting Calendar for Pea

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

Pea are very cold tolerant which means that you can get them planted much earlier than other plants that might not handle the cold.

The earliest that you can plant pea in Zone 4b 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 pea and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pea may not have a chance to grow to maturity. You can get started a little bit earlier by starting your pea indoors.

Last Frost Date

The average date of last frost is May 15 in Zone 4b. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Zone 4b and it changes from year to year. Since half of the time in Zone 4b you get surprised by a frost after May 15 be ready to protect your pea in the event of a surprise late frost.

USDA Zone Info for Zone 4b

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Zone 4b

You may be interested in your other planting guides for Zone 4b.