Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Alhambra you can figure out 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 the last frost has passed.

You really shouldn't plant marigold until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant marigold in Alhambra 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 grow to maturity. Starting your marigold indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Alhambra the average date of last frost happens on January 31. You should expect an average low temperature of 30°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Alhambra is an average and the actual date of last frost will vary from year to year. Since half of the time in Alhambra it frosts late in the year after January 31 be ready to cover your marigold in the event of a late frost.

USDA Zone Info for Alhambra

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 Alhambra

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