Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Manhattan should be reviewed to figure out when it's the best time to plant asparagus lettuce.

Planting Calendar for Asparagus lettuce

Frost tolerance for asparagus lettuce:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You really shouldn't plant asparagus lettuce until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant asparagus lettuce in Manhattan 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 asparagus lettuce and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus lettuce may not have a chance to fully mature. You can get started a few weeks earlier by starting your asparagus lettuce indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Manhattan. You should expect an average low temperature of -15°F in the coldest months of winter.

It's important to remember that USDA zone info for Manhattan may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Manhattan you get a frost after April 15 be ready to protect your asparagus lettuce in the event of one of those late frosts.

USDA Zone Info for Manhattan

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Manhattan

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