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.

You can figure out when it's a good idea to plant periwinkles in La Mirada by checking out the USDA zone info.

Planting Calendar for Periwinkles

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

Since periwinkles do not do well in cold weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant periwinkles in La Mirada 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 periwinkles and expect a good harvest is probably September. Any later than that and your periwinkles may not have a chance to really do well. You can get started a couple of weeks earlier by starting your periwinkles indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in La Mirada. It might get as low as 35°F during the coldest months of winter.

Since the USDA zone info for La Mirada may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in La Mirada it frosts late in the year after January 31 so be sure to be ready to protect your periwinkles if you have a surprise late frost.

USDA Zone Info for La Mirada

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 La Mirada

You may be interested in your other planting guides for La Mirada.