One of the first steps you take when you are getting a good idea 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 USDA zone info for Berwyn can be reffered to in order to figure out when it's possible to plant chives.

Planting Calendar for Chives

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

Chives are very cold tolerant which means that you can get them planted much earlier than more sensitive plants.

The earliest that you can plant chives in Berwyn 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 chives and expect a good harvest is probably September. If you wait any later than that and your chives may not have a chance to fully mature. You can get started a few weeks earlier by starting your chives indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Berwyn. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Berwyn is an average the actual date of last frost changes from year to year. Since half of the time in Berwyn it frosts late in the year after April 15 be ready to cover your chives in the event of a surprise late frost.

USDA Zone Info for Berwyn

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Berwyn

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