Before planting it is a good idea to find your USDA Zone info to figure out 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 Deltona you can estimate when it's the best time to plant marigold by checking out the USDA zone info.

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 it is important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant marigold in Deltona 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 grow to maturity. You can get started a few weeks earlier by starting your marigold indoors.

Last Frost Date

In Deltona the average date of last frost happens on February 15. You should expect an average low temperature of 25°F in the coldest months of winter.

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

USDA Zone Info for Deltona

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 Deltona

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