The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant myosotis in Gretna should be determined by using 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.

You can plant myosotis a little bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant myosotis in Gretna 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. You probably don't want to wait any later than that or else your myosotis may not have a chance to really do well. You can get started a little bit earlier by starting your myosotis indoors.

Last Frost Date

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

Since the USDA zone info for Gretna may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Gretna it frosts late in the year after April 15 so be sure to be ready to cover your myosotis in the event of one of those late frosts.

USDA Zone Info for Gretna

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Gretna

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