One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of making a decision about when to plant strawflowers is to use the USDA zone info for Waukesha.

Planting Calendar for Strawflowers

Frost tolerance for strawflowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since strawflowers do ok in moderate cold you can plant them a bit earlier in the year than other plants that might not handle the cold.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Waukesha. In the coldest months of winter you should expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Waukesha is an average and the actual date of last frost is different every year. Since half of the time in Waukesha you get surprised by a frost after April 15 be ready to protect your strawflowers if you have one of those late frosts.

USDA Zone Info for Waukesha

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Waukesha

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