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.

One way of making a decision about when you can plant dipladenia is to refer to the USDA zone info for Geneva.

Planting Calendar for Dipladenia

Frost tolerance for dipladenia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since dipladenia are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant dipladenia in Geneva 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 little bit earlier.

Last Frost Date

In Geneva the average date of last frost happens on April 15. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Geneva is just an average the actual date of last frost is different every year. Since half of the time in Geneva there is a last frost after April 15 be ready to protect your dipladenia in the event of a late frost.

USDA Zone Info for Geneva

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Geneva

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