When can I plant Dipladenia in Zone 8b

The USDA Zone info is a great tool for gardeners to help us determine our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

It's possible to figure out when it's the best time to plant dipladenia by reviewing the USDA zone info for Zone 8b.


Planting Calendar for Dipladenia

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

It's not a good idea to plant dipladenia until after the last frost when the weather gets warmer because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant dipladenia
Possibly ok, but a risky time to plant dipladenia
Probably not a good time to plant dipladenia

The earliest that you can plant dipladenia in Zone 8b 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 really do well. You can get started a few weeks earlier by starting your dipladenia indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Zone 8b. It might get as low as 15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Zone 8b may not be accurate from year to year and our actual date of last frost is different every year. Since half of the time in Zone 8b we get a frost after March 15 be ready to protect your dipladenia in the event of a surprise late frost.

USDA Zone Info for Zone 8b

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low15°F
Highest Expected Low20°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 20°F.

Plants to Grow in Zone 8b

You may be interested in our other planting guides for Zone 8b.