One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

In Monrovia you can figure out when you can plant celosia by referring to the USDA zone info.

Planting Calendar for Celosia

Frost tolerance for celosia:	Not tolerant of frost.
When to plant:	After the last frost.

Since celosia do not do well in cold weather it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant celosia in Monrovia 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 celosia and expect a good harvest is probably September. Any later than that and your celosia may not have a chance to grow to maturity. You can get started a little bit earlier by starting your celosia indoors.

Last Frost Date

The average date of last frost is January 31 in Monrovia. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Monrovia is not always accurate and the actual date of last frost changes from year to year. Half of the time in Monrovia it frosts late in the year after January 31 so just be sure to be ready to cover your celosia in the event of a surprise late frost.

USDA Zone Info for Monrovia

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 Monrovia

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