Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of making a decision about when to plant larkspur is to check out the USDA zone info for Jacksonville Beach.

Planting Calendar for Larkspur

Frost tolerance for larkspur:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Larkspur do ok in pretty solid cold which means that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant larkspur in Jacksonville Beach is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant larkspur and expect a good harvest is probably October. If you wait any later than that and your larkspur may not have a chance to really do well. If you are starting your larkspur 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 February 15 in Jacksonville Beach. In the coldest months of winter you should expect an average low temperature of 20°F.

Always keep in mind that USDA zone info for Jacksonville Beach is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Jacksonville Beach last frost occurs after February 15 be ready to cover your larkspur if you have a surprise late frost.

USDA Zone Info for Jacksonville Beach

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Jacksonville Beach

You may be interested in your other planting guides for Jacksonville Beach.