One of the first steps you take when you are getting a good idea 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.

The best time to plant periwinkles in La Palma should be figured out by using the USDA zone info.

Planting Calendar for Periwinkles

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

Periwinkles do not do well in cold weather which means that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant periwinkles in La Palma 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 grow to maturity. You can get started a few weeks earlier by starting your periwinkles indoors.

Last Frost Date

On average all chance of frost has passed is on January 31 in La Palma. In the coldest months of winter you should expect an average low temperature of 35°F.

Since the USDA zone info for La Palma is not always accurate the actual date of last frost changes from year to year. Since half of the time in La Palma it frosts late in the year after January 31 be ready to protect your periwinkles if you have a late frost.

USDA Zone Info for La Palma

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 Palma

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