Before planting it is a good idea to find your USDA Zone info to determine 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.

In Jacksonville Beach you can figure out when it's the best time to plant marigold by reviewing the USDA zone info.

Planting Calendar for Marigold

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

It's probably a bad idea to plant marigold until after the last frost because they require warm weather.

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

The last month that you can plant marigold and expect a good harvest is probably September. Any later than that and your marigold may not have a chance to fully mature. If you are starting your marigold indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Jacksonville Beach. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Jacksonville Beach may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Jacksonville Beach there is a last frost after February 15 so make sure that you are ready to protect your marigold 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.