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.

It's a good idea to figure out when it's possible to plant cardinal flower by checking out the USDA zone info for Del Mar.

Planting Calendar for Cardinal Flower

Frost tolerance for cardinal flower:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant cardinal flower until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant cardinal flower 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 cardinal flower and expect a good harvest is probably September. Any later than that and your cardinal flower may not have a chance to really do well. Starting your cardinal flower indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Del Mar. You should expect an average low temperature of 30°F in the coldest months of winter.

Remember that USDA zone info for Del Mar may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Del Mar you get surprised by a frost after January 31 so just be sure to be ready to protect your cardinal flower 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.