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

By referring to the USDA zone info for Roseville it's possible 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 has passed.

Since dipladenia require warm weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant dipladenia in Roseville 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 grow to maturity. You can get started a little bit earlier by starting your dipladenia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Roseville. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Roseville is an average the actual date of last frost will vary from year to year. Half of the time in Roseville you get a frost after April 15 so make sure that you are ready to protect your dipladenia in the event of a surprise late frost.

USDA Zone Info for Roseville

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Roseville

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