One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when to plant asparagus lettuce is to consult the USDA zone info for Frederick.

Planting Calendar for Asparagus lettuce

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

It's probably not a good idea to plant asparagus lettuce until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant asparagus lettuce in Frederick 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. If you wait any later than that and your asparagus lettuce may not have a chance to fully mature. If you are starting your asparagus lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Frederick. In the coldest months of winter you can expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Frederick is not always accurate and the actual date of last frost changes from year to year. Half of the time in Frederick it frosts late in the year after April 15 so make sure that you are ready to protect your asparagus lettuce if you have a surprise late frost.

USDA Zone Info for Frederick

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 Frederick

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