One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to determine when it's possible to plant marigold by looking at the USDA zone info for Casselberry.

Planting Calendar for Marigold

Frost tolerance for marigold:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since marigold require warm weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant marigold in Casselberry 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 really do well. You can get started a couple of weeks earlier by starting your marigold indoors.

Last Frost Date

On average the last frost is on February 15 in Casselberry. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Casselberry is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Casselberry there is a last frost after February 15 so make sure that you are prepared to cover your marigold in the event of a late frost.

USDA Zone Info for Casselberry

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Casselberry

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