One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. 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 lettuce in New Ulm should be determined by referring to the USDA zone info.

Planting Calendar for Lettuce

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

Since lettuce are one of those plants that can tolerate a little bit of cold weather you can plant them a little earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant lettuce in New Ulm 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 lettuce and expect a good harvest is probably August. If you wait any later than that and your lettuce may not have a chance to really do well. You can get started a couple of weeks earlier by starting your lettuce indoors.

Last Frost Date

On average the last frost has passed is on May 15 in New Ulm. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for New Ulm is an average the actual date of last frost will vary from year to year. Half of the time in New Ulm it frosts late in the year after May 15 so always be ready to cover your lettuce if you have a late frost.

USDA Zone Info for New Ulm

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 New Ulm

You may be interested in your other planting guides for New Ulm.