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.

You should be able to figure out when it's the best time to plant mustard greens by checking out the USDA zone info for Zone 2b.

Planting Calendar for Mustard greens

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

Since mustard greens do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant mustard greens in Zone 2b is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant mustard greens and expect a good harvest is probably August. If you wait any later than that and your mustard greens may not have a chance to fully mature. Starting your mustard greens indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 2b. In the coldest months of winter you can expect an average low temperature of -45°F.

Since the USDA zone info for Zone 2b may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Zone 2b it frosts late in the year after May 15 be ready to protect your mustard greens in the event of one of those late frosts.

USDA Zone Info for Zone 2b

Here is the info for USDA Zone 2b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	August 15
Lowest Expected Low	-45°F
Highest Expected Low	-40°F

This means that on a really cold year, the coldest it will get is -45°F. On most years you should be prepared to experience lows near -40°F.

Plants to Grow in Zone 2b

You may be interested in your other planting guides for Zone 2b.