Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant periwinkles in Arcadia can be determined by looking at the USDA zone info.

Planting Calendar for Periwinkles

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

You really shouldn't plant periwinkles until after all chance of frost has passed because they require warm weather.

The earliest that you can plant periwinkles in Arcadia is March. However, you really should wait until April 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 fully mature. Starting your periwinkles indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Arcadia. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Arcadia is just an average the actual date of last frost is different every year. Half of the time in Arcadia it frosts late in the year after February 15 so make sure that you are prepared to cover your periwinkles if you have one of those late frosts.

USDA Zone Info for Arcadia

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Arcadia

You may be interested in your other planting guides for Arcadia.