One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. 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 Del Mar it's a good idea to figure out when to plant pentas.

Planting Calendar for Pentas

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

Pentas do not do well in cold weather which means that it's necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant pentas in Del Mar 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 pentas and expect a good harvest is probably September. Any later than that and your pentas may not have a chance to really do well. You can get started a few weeks earlier by starting your pentas indoors.

Last Frost Date

On average the last frost is on January 31 in Del Mar. In the coldest months of winter you should expect an average low temperature of 30°F.

Remember that USDA zone info for Del Mar 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 Del Mar you get a frost after January 31 so make sure that you are ready to protect your pentas if you have one of those late frosts.

USDA Zone Info for Del Mar

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 Del Mar

You may be interested in your other planting guides for Del Mar.