One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when you can plant runner beans is to check out the USDA zone info for Monrovia.

Planting Calendar for Runner beans

Frost tolerance for runner beans:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You should not plant runner beans until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant runner beans 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 runner beans and expect a good harvest is probably September. You probably don't want to wait any later than that or else your runner beans may not have a chance to really do well. Starting your runner beans indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Monrovia the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Monrovia and it can change quite a bit 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 runner beans in the event of a 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.