One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Monrovia you can figure out when it's possible to plant cleome by referring to the USDA zone info.

Planting Calendar for Cleome

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

It's probably a bad idea to plant cleome until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant cleome 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 cleome and expect a good harvest is probably September. If you wait any later than that and your cleome may not have a chance to fully mature. You can get started a few weeks earlier by starting your cleome indoors.

Last Frost Date

On average the last frost has passed is on January 31 in Monrovia. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Monrovia may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Monrovia it frosts late in the year after January 31 so always be ready to cover your cleome in the event of one of those late frosts.

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.