The USDA Zone info is a great tool for gardeners to help us determine 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.

In Onalaska you can determine when it's possible to plant lunaria by reviewing the USDA zone info.

Planting Calendar for Lunaria

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

Since lunaria are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant lunaria 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 lunaria and expect a good harvest is probably August. Any later than that and your lunaria may not have a chance to really do well. You can get started a few weeks earlier by starting your lunaria indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Onalaska. It might get as low as -25°F during the coldest months of winter.

It's important to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Onalaska and it changes from year to year. Half of the time in Onalaska there is a last frost after May 15 so make sure that you are prepared to protect your lunaria 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.