Before planting it is a good idea to find your USDA Zone info to determine your garden 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 you can plant digitalis by checking out the USDA zone info.

Planting Calendar for Digitalis

Frost tolerance for digitalis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant digitalis a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant digitalis in Marshalltown is February. However, you really should wait until March if you don't want to take any chances.

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

Last Frost Date

On average the last frost has passed is on April 15 in Marshalltown. You can expect an average low temperature of -20°F in the coldest months of winter.

Remember that USDA zone info for Marshalltown is just an average and the actual date of last frost is different every year. Since half of the time in Marshalltown last frost occurs after April 15 be ready to cover your digitalis in the event of one of those late frosts.

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.