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

In Marshalltown you can estimate when it's the best time to plant brunfelsia by looking at the USDA zone info.

Planting Calendar for Brunfelsia

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

Since brunfelsia 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 brunfelsia in Marshalltown 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 brunfelsia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your brunfelsia may not have a chance to really do well. If you are starting your brunfelsia indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Marshalltown. In the coldest months of winter you can expect an average low temperature of -20°F.

Remember that USDA zone info for Marshalltown is an average and the actual date of last frost changes from year to year. Since half of the time in Marshalltown there is a last frost after April 15 be ready to cover your brunfelsia if you have a surprise late frost.

USDA Zone Info for Marshalltown

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 Marshalltown

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