The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant polka dot plant in Costa Mesa should be estimated by using the USDA zone info.

Planting Calendar for Polka Dot Plant

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

Polka Dot Plant are not cold tolerant which means that it's necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant polka dot plant in Costa Mesa 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 polka dot plant and expect a good harvest is probably September. You probably don't want to wait any later than that or else your polka dot plant may not have a chance to grow to maturity. You can get started a little bit earlier by starting your polka dot plant indoors.

Last Frost Date

In Costa Mesa the average date of last frost happens on January 31. You should expect an average low temperature of 35°F in the coldest months of winter.

Remember that USDA zone info for Costa Mesa is an average and the actual date of last frost changes from year to year. Half of the time in Costa Mesa you get a frost after January 31 so always be ready to cover your polka dot plant in the event of a late frost.

USDA Zone Info for Costa Mesa

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Costa Mesa

You may be interested in your other planting guides for Costa Mesa.