One of the best tools that you have as gardeners to help us determine 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.

One way of estimating when it's the best time to plant forget-me-not is to look at the USDA zone info for Groton.

Planting Calendar for Forget-Me-Not

Frost tolerance for forget-me-not:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant forget-me-not just a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant forget-me-not in Groton 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 forget-me-not and expect a good harvest is probably September. If you wait any later than that and your forget-me-not may not have a chance to really do well. You can get started a few weeks earlier by starting your forget-me-not indoors.

Last Frost Date

The average date of last frost is April 15 in Groton. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Groton and it changes from year to year. Since half of the time in Groton last frost occurs after April 15 be ready to cover your forget-me-not if you have a 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.