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

A way of making a decision about when it's the best time to plant bidens is to check out the USDA zone info for Antigo.

Planting Calendar for Bidens

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

Since bidens require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant bidens in Antigo 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 bidens and expect a good harvest is probably August. If you wait any later than that and your bidens may not have a chance to really do well. Starting your bidens indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Antigo. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Antigo is just an average the actual date of last frost changes from year to year. Since half of the time in Antigo last frost occurs after May 15 be ready to cover your bidens in the event of one of those late frosts.

USDA Zone Info for Antigo

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Antigo

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