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.

The best time to plant marigold in Fontana should be determined 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.

Since marigold do not do well in cold weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant marigold in Fontana 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 marigold and expect a good harvest is probably September. Any later than that and your marigold may not have a chance to fully mature. Starting your marigold indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on January 31 in Fontana. In the coldest months of winter you can expect an average low temperature of 30°F.

Just be sure to remember that USDA zone info for Fontana may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Fontana you get surprised by a frost after January 31 so just be sure to be ready to protect your marigold if you have one of those late frosts.

USDA Zone Info for Fontana

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 Fontana

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