Before planting it is a good idea to find your USDA Zone info to figure out 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 first opportunity to plant asparagus in Downingtown can be estimated by checking out the USDA zone info.

Planting Calendar for Asparagus

Frost tolerance for asparagus:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Asparagus do ok in cold weather which tells us that you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant asparagus in Downingtown is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant asparagus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your asparagus may not have a chance to fully mature. Starting your asparagus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Downingtown the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

Just be sure to remember that USDA zone info for Downingtown is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Downingtown last frost occurs after April 15 be ready to cover your asparagus in the event of a late frost.

USDA Zone Info for Downingtown

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Downingtown

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