One of the first steps you take when you are estimating your gardening schedule is find your 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 first chance to plant asparagus fern in Baltimore should be estimated by using the USDA zone info.

Planting Calendar for Asparagus Fern

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

Since asparagus fern are not cold tolerant it's important to wait until after the last frost before you can plant them.

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

Last Frost Date

The average date of last frost is April 15 in Baltimore. In the coldest months of winter you should expect an average low temperature of 5°F.

It's important to remember that USDA zone info for Baltimore is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Baltimore there is a last frost after April 15 so make sure that you are ready to cover your asparagus fern in the event of a surprise late frost.

USDA Zone Info for Baltimore

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Baltimore

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