Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant impatiens in Zone 12a should be determined by looking at the USDA zone info.

Planting Calendar for Impatiens

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

It's a bad idea to plant impatiens until after all chance of frost has passed because they require warm weather.

The earliest that you can plant impatiens in Zone 12a is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant impatiens and expect a good harvest is probably November. Any later than that and your impatiens may not have a chance to grow to maturity. Starting your impatiens indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Zone 12a it never frosts. You can expect an average low temperature of 50°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Zone 12a and it will vary from year to year. Since it never frosts in Zone 12a you do not have to be ready to cover your impatiens if you have one of those late frosts.

USDA Zone Info for Zone 12a

Here is the info for USDA Zone 12a.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	50°F
Highest Expected Low	55°F

This means that on a really cold year, the coldest it will get is 50°F. On most years you should be prepared to experience lows near 55°F.

Plants to Grow in Zone 12a

You may be interested in your other planting guides for Zone 12a.