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

The first chance to plant myosotis in Plymouth should be determined by reviewing the USDA zone info.

Planting Calendar for Myosotis

Frost tolerance for myosotis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Myosotis are moderately cold tolerant which tells us that you can plant them earlier than plants that are more sensitive to the cold.

The earliest that you can plant myosotis in Plymouth 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 myosotis and expect a good harvest is probably September. If you wait any later than that and your myosotis may not have a chance to grow to maturity. Starting your myosotis 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 Plymouth. You should expect an average low temperature of -10°F in the coldest months of winter.

Remember that USDA zone info for Plymouth 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 Plymouth last frost occurs after April 15 so make sure that you are prepared to cover your myosotis if you have a surprise late frost.

USDA Zone Info for Plymouth

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 Plymouth

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