One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant achimenes in Perris should be determined 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.

Achimenes require warm weather which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant achimenes in Perris 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 achimenes and expect a good harvest is probably September. Any later than that and your achimenes may not have a chance to really do well. Starting your achimenes 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 Perris. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Perris is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Perris there is a last frost after February 15 so always be ready to protect your achimenes in the event of one of those late frosts.

USDA Zone Info for Perris

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 Perris

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