One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Pasadena you can figure out when you can plant dipladenia by referring to the USDA zone info.

Planting Calendar for Dipladenia

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

You can not plant dipladenia until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant dipladenia in Pasadena is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant dipladenia and expect a good harvest is probably September. If you wait any later than that and your dipladenia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your dipladenia indoors.

Last Frost Date

The average date of last frost is January 31 in Pasadena. In the coldest months of winter you can expect an average low temperature of 30°F.

Keep in mind that USDA zone info for Pasadena is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Pasadena there is a last frost after January 31 so be sure to be ready to protect your dipladenia if you have a late frost.

USDA Zone Info for Pasadena

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Pasadena

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