Before planting it is a good idea to find your USDA Zone info to figure out 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.

The USDA zone info for Muscatine should be used to determine when it's possible to plant dipladenia.

Planting Calendar for Dipladenia

Frost tolerance for dipladenia:	Not tolerant of frost.
When to plant:	After the last frost.

Dipladenia are not cold tolerant which means that you need to wait until it warms up after the last frost before you can plant them.

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

Last Frost Date

The average date of last frost is April 15 in Muscatine. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Muscatine is an average and the actual date of last frost changes from year to year. Half of the time in Muscatine it frosts late in the year after April 15 so make sure that you are prepared to cover your dipladenia if you have a late frost.

USDA Zone Info for Muscatine

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 Muscatine

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