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

The best time to plant four-o-clock flower in Waunakee should be estimated by reviewing the USDA zone info.

Planting Calendar for Four-o-clock flower

Frost tolerance for four-o-clock flower:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Four-o-clock flower require warm weather which tells us that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant four-o-clock flower in Waunakee is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant four-o-clock flower and expect a good harvest is probably August. If you wait any later than that and your four-o-clock flower may not have a chance to grow to maturity. You can get started a little bit earlier by starting your four-o-clock flower indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Waunakee. It might get as low as -20°F during the coldest months of winter.

Remember that USDA zone info for Waunakee is not always accurate and the actual date of last frost is different every year. Half of the time in Waunakee you get surprised by a frost after April 15 so make sure that you are ready to protect your four-o-clock flower in the event of a late frost.

USDA Zone Info for Waunakee

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Waunakee

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