The USDA Zone info is a great tool for gardeners to help us figure out 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 Eau Claire you can estimate when it's a good idea to plant alternaria by reviewing the USDA zone info.

Planting Calendar for Alternaria

Frost tolerance for alternaria:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant alternaria until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant alternaria in Eau Claire is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant alternaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alternaria may not have a chance to really do well. If you are starting your alternaria indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Eau Claire. You should expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Eau Claire and it will vary from year to year. Since half of the time in Eau Claire last frost occurs after May 15 be ready to cover your alternaria in the event of one of those late frosts.

USDA Zone Info for Eau Claire

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 Eau Claire

You may be interested in your other planting guides for Eau Claire.