Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant bittercress in Groton can be estimated by looking at the USDA zone info.

Planting Calendar for Bittercress

Frost tolerance for bittercress:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Bittercress can survive in mild cold which means that you can plant them a bit earlier in the year than more sensitive plants.

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

The last month that you can plant bittercress and expect a good harvest is probably August. If you wait any later than that and your bittercress may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bittercress indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Groton is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Groton last frost occurs after April 15 so just be sure to be ready to cover your bittercress if you have a surprise late frost.

USDA Zone Info for Groton

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 Groton

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