The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Onalaska you can figure out when you can plant forget-me-not by referring to the USDA zone info.

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.

Forget-Me-Not do ok in mild cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant forget-me-not in Onalaska 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 forget-me-not and expect a good harvest is probably August. Any later than that and your forget-me-not may not have a chance to really do well. Starting your forget-me-not indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Onalaska the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Onalaska and it changes from year to year. Since half of the time in Onalaska it frosts late in the year after May 15 be ready to protect your forget-me-not in the event of one of those late frosts.

USDA Zone Info for Onalaska

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Onalaska

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