The USDA Zone info is a great tool for gardeners to help us determine 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.

One way of making a decision about when it's a good idea to plant transvaal daisy is to examine the USDA zone info for Zimmerman.

Planting Calendar for Transvaal Daisy

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

Since transvaal daisy are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant transvaal daisy in Zimmerman 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 transvaal daisy and expect a good harvest is probably August. You probably don't want to wait any later than that or else your transvaal daisy may not have a chance to fully mature. Starting your transvaal daisy indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Zimmerman. You should expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Zimmerman is just an average the actual date of last frost is different every year. Half of the time in Zimmerman you get a frost after May 15 so just be sure to be ready to protect your transvaal daisy if you have a late frost.

USDA Zone Info for Zimmerman

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 Zimmerman

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