Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By looking at the USDA zone info for Red Lion it's a good idea to figure out when you can plant dipladenia.

Planting Calendar for Dipladenia

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

You should not plant dipladenia until after the last frost because they are not cold tolerant.

The earliest that you can plant dipladenia in Red Lion 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. Any later than that and your dipladenia may not have a chance to fully mature. You can get started a few weeks earlier by starting your dipladenia indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Red Lion. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Red Lion is just an average the actual date of last frost is different every year. Since half of the time in Red Lion last frost occurs after April 15 be ready to cover your dipladenia if you have a late frost.

USDA Zone Info for Red Lion

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Red Lion

You may be interested in your other planting guides for Red Lion.