One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. 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 Monrovia you should be able to estimate when it's the best time to 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 really should wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant dipladenia in Monrovia 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. 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 January 31 in Monrovia. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Monrovia is just an average and the actual date of last frost is different every year. Since half of the time in Monrovia last frost occurs after January 31 be ready to cover your dipladenia in the event of a late frost.

USDA Zone Info for Monrovia

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 Monrovia

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