Before planting it is a good idea to find your USDA Zone info to estimate 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.

In Imperial you can determine when it's the best time to plant achimenes by looking at the USDA zone info.

Planting Calendar for Achimenes

Frost tolerance for achimenes:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since achimenes do not do well in cold weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant achimenes in Imperial 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 achimenes and expect a good harvest is probably September. If you wait any later than that and your achimenes may not have a chance to fully mature. You can get started a few weeks earlier by starting your achimenes indoors.

Last Frost Date

The average date of last frost is January 31 in Imperial. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Imperial is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Imperial you get surprised by a frost after January 31 so be sure to be ready to protect your achimenes in the event of a surprise late frost.

USDA Zone Info for Imperial

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Imperial

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