One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Blanchester should be used to figure out when it's a good idea to plant dipladenia.

Planting Calendar for Dipladenia

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

It's probably not a good idea to plant dipladenia until after the last frost because they do not do well in cold weather.

The earliest that you can plant dipladenia in Blanchester 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. If you wait any later than that and your dipladenia may not have a chance to fully mature. If you are starting your dipladenia 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 Blanchester. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Blanchester is not always accurate the actual date of last frost is different every year. Since half of the time in Blanchester you get surprised by a frost after April 15 be ready to cover your dipladenia in the event of one of those late frosts.

USDA Zone Info for Blanchester

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 Blanchester

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