Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when it's possible to plant zucchini is to look at the USDA zone info for Wausau.

Planting Calendar for Zucchini

Frost tolerance for zucchini:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since zucchini do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant zucchini in Wausau 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 zucchini and expect a good harvest is probably August. If you wait any later than that and your zucchini may not have a chance to fully mature. You can get started a little bit earlier by starting your zucchini indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on May 15 in Wausau. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Wausau may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Wausau you get a frost after May 15 be ready to protect your zucchini if you have a late frost.

USDA Zone Info for Wausau

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 Wausau

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