Before planting it is a good idea to find your USDA Zone info to estimate 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 earliest that you can plant myosotis in River Rouge can be determined by referring to 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 do well in moderate cold which tells us that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant myosotis in River Rouge 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 really do well. You can get started a few weeks earlier by starting your myosotis indoors.

Last Frost Date

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

Since the USDA zone info for River Rouge is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in River Rouge you get a frost after April 15 be ready to protect your myosotis if you have a late frost.

USDA Zone Info for River Rouge

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 River Rouge

You may be interested in your other planting guides for River Rouge.